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315
.dagger/main.go
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315
.dagger/main.go
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// Container image builder for Ubuntu and Chainguard-based images with extensible tools
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package main
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import (
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"context"
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"fmt"
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"dagger/containers/internal/dagger"
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"gopkg.in/yaml.v3"
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)
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type Containers struct{}
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// Configuration structures
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type ToolsConfig struct {
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Core CoreTools `yaml:"core"`
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Tools map[string]ToolDef `yaml:"tools"`
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}
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type CoreTools struct {
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Git string `yaml:"git"`
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Jq string `yaml:"jq"`
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Yq string `yaml:"yq"`
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Node20 string `yaml:"node20"`
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Node22 string `yaml:"node22"`
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Node24 string `yaml:"node24"`
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}
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type ToolDef struct {
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Version string `yaml:"version"`
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Description string `yaml:"description"`
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}
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// Load tools configuration from YAML
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func (m *Containers) loadConfig(ctx context.Context, configFile *dagger.File) (*ToolsConfig, error) {
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content, err := configFile.Contents(ctx)
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if err != nil {
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return nil, err
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}
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var config ToolsConfig
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if err := yaml.Unmarshal([]byte(content), &config); err != nil {
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return nil, err
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}
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return &config, nil
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}
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// Build Ubuntu base image with core tools
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func (m *Containers) buildUbuntuBase(ctx context.Context, config *ToolsConfig, platform dagger.Platform) *dagger.Container {
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ctr := dag.Container(dagger.ContainerOpts{Platform: platform}).From("ubuntu:24.04")
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// Determine architecture for downloads
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arch := "amd64"
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if platform == "linux/arm64" {
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arch = "arm64"
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}
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// Update and install base dependencies
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ctr = ctr.WithExec([]string{"apt-get", "update"}).
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WithExec([]string{"apt-get", "install", "-y",
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"ca-certificates",
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"curl",
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"wget",
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"gnupg",
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"lsb-release",
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})
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// Install Git
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ctr = ctr.WithExec([]string{"apt-get", "install", "-y", "git"})
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// Install jq
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ctr = ctr.WithExec([]string{"sh", "-c",
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fmt.Sprintf("curl -sL https://github.com/jqlang/jq/releases/download/jq-%s/jq-linux-%s -o /usr/local/bin/jq && chmod +x /usr/local/bin/jq", config.Core.Jq, arch)})
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// Install yq
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ctr = ctr.WithExec([]string{"sh", "-c",
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fmt.Sprintf("curl -sL https://github.com/mikefarah/yq/releases/download/v%s/yq_linux_%s -o /usr/local/bin/yq && chmod +x /usr/local/bin/yq", config.Core.Yq, arch)})
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// Install Node.js versions using nvm approach
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ctr = ctr.WithExec([]string{"sh", "-c",
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"curl -fsSL https://deb.nodesource.com/setup_20.x | bash -"}).
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WithExec([]string{"apt-get", "install", "-y", "nodejs"})
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// Clean up
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ctr = ctr.WithExec([]string{"apt-get", "clean"}).
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WithExec([]string{"rm", "-rf", "/var/lib/apt/lists/*"})
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return ctr
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}
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// Build Chainguard base image with core tools
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func (m *Containers) buildChainguardBase(ctx context.Context, config *ToolsConfig, platform dagger.Platform) *dagger.Container {
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// Using Chainguard's Wolfi-based images which are minimal
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ctr := dag.Container(dagger.ContainerOpts{Platform: platform}).From("cgr.dev/chainguard/wolfi-base:latest")
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// Determine architecture for downloads
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arch := "amd64"
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if platform == "linux/arm64" {
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arch = "arm64"
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}
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// Install core tools using apk (Wolfi package manager)
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ctr = ctr.WithExec([]string{"apk", "update"}).
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WithExec([]string{"apk", "add", "git", "curl", "wget", "bash", "ca-certificates"})
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// Create /usr/local/bin if it doesn't exist
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ctr = ctr.WithExec([]string{"mkdir", "-p", "/usr/local/bin"})
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// Install jq
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ctr = ctr.WithExec([]string{"sh", "-c",
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fmt.Sprintf("wget -q https://github.com/jqlang/jq/releases/download/jq-%s/jq-linux-%s -O /usr/local/bin/jq && chmod +x /usr/local/bin/jq", config.Core.Jq, arch)})
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// Install yq
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ctr = ctr.WithExec([]string{"sh", "-c",
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fmt.Sprintf("wget -q https://github.com/mikefarah/yq/releases/download/v%s/yq_linux_%s -O /usr/local/bin/yq && chmod +x /usr/local/bin/yq", config.Core.Yq, arch)})
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// Install Node.js
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ctr = ctr.WithExec([]string{"apk", "add", "nodejs", "npm"})
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return ctr
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}
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// Build Ubuntu image with specific tool
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func (m *Containers) buildUbuntuTool(ctx context.Context, base *dagger.Container, toolName string, toolDef ToolDef, platform dagger.Platform) *dagger.Container {
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ctr := base
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// Determine architecture for downloads
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arch := "amd64"
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goArch := "x86_64"
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if platform == "linux/arm64" {
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arch = "arm64"
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goArch = "aarch64"
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}
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switch toolName {
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case "kustomize":
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ctr = ctr.WithExec([]string{"sh", "-c",
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fmt.Sprintf("curl -sL https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%%2Fv%s/kustomize_v%s_linux_%s.tar.gz | tar xz -C /usr/local/bin", toolDef.Version, toolDef.Version, arch)})
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case "dagger":
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ctr = ctr.WithExec([]string{"sh", "-c",
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fmt.Sprintf("curl -sL https://github.com/dagger/dagger/releases/download/v%s/dagger_v%s_linux_%s.tar.gz | tar xz -C /usr/local/bin", toolDef.Version, toolDef.Version, arch)})
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case "esphome":
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ctr = ctr.WithExec([]string{"apt-get", "update"}).
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WithExec([]string{"apt-get", "install", "-y", "python3", "python3-pip", "python3-venv"}).
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WithExec([]string{"pip3", "install", "--break-system-packages", fmt.Sprintf("esphome==%s", toolDef.Version)}).
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WithExec([]string{"apt-get", "clean"})
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case "zola":
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ctr = ctr.WithExec([]string{"sh", "-c",
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fmt.Sprintf("curl -sL https://github.com/getzola/zola/releases/download/v%s/zola-v%s-%s-unknown-linux-gnu.tar.gz | tar xz -C /usr/local/bin", toolDef.Version, toolDef.Version, goArch)})
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case "yamllint":
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ctr = ctr.WithExec([]string{"apt-get", "update"}).
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WithExec([]string{"apt-get", "install", "-y", "python3", "python3-pip"}).
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WithExec([]string{"pip3", "install", "--break-system-packages", fmt.Sprintf("yamllint==%s", toolDef.Version)}).
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WithExec([]string{"apt-get", "clean"})
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}
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return ctr
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}
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// Build Chainguard image with specific tool
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func (m *Containers) buildChainguardTool(ctx context.Context, base *dagger.Container, toolName string, toolDef ToolDef, platform dagger.Platform) *dagger.Container {
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ctr := base
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// Determine architecture for downloads
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arch := "amd64"
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goArch := "x86_64"
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if platform == "linux/arm64" {
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arch = "arm64"
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goArch = "aarch64"
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}
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switch toolName {
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case "kustomize":
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ctr = ctr.WithExec([]string{"sh", "-c",
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fmt.Sprintf("wget -q -O - https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%%2Fv%s/kustomize_v%s_linux_%s.tar.gz | tar xz -C /usr/local/bin", toolDef.Version, toolDef.Version, arch)})
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case "dagger":
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ctr = ctr.WithExec([]string{"sh", "-c",
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fmt.Sprintf("wget -q -O - https://github.com/dagger/dagger/releases/download/v%s/dagger_v%s_linux_%s.tar.gz | tar xz -C /usr/local/bin", toolDef.Version, toolDef.Version, arch)})
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case "esphome":
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ctr = ctr.WithExec([]string{"apk", "add", "python3", "py3-pip"}).
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WithExec([]string{"pip3", "install", fmt.Sprintf("esphome==%s", toolDef.Version)})
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case "zola":
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ctr = ctr.WithExec([]string{"sh", "-c",
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fmt.Sprintf("wget -q -O - https://github.com/getzola/zola/releases/download/v%s/zola-v%s-%s-unknown-linux-gnu.tar.gz | tar xz -C /usr/local/bin", toolDef.Version, toolDef.Version, goArch)})
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case "yamllint":
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ctr = ctr.WithExec([]string{"apk", "add", "python3", "py3-pip"}).
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WithExec([]string{"pip3", "install", fmt.Sprintf("yamllint==%s", toolDef.Version)})
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}
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return ctr
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}
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// BuildAll builds all container images for multiple architectures
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func (m *Containers) BuildAll(ctx context.Context,
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// Configuration file
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configFile *dagger.File,
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// Registry to push images to
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// +optional
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registry string,
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) error {
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// Load configuration
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config, err := m.loadConfig(ctx, configFile)
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if err != nil {
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return fmt.Errorf("failed to load config: %w", err)
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}
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platforms := []dagger.Platform{"linux/amd64", "linux/arm64"}
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// Build and publish Ubuntu base
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ubuntuBaseTag := "ubuntu-runner:24.04"
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if registry != "" {
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ubuntuBaseTag = fmt.Sprintf("%s/%s", registry, ubuntuBaseTag)
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}
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var ubuntuBaseVariants []*dagger.Container
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for _, platform := range platforms {
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ubuntuBase := m.buildUbuntuBase(ctx, config, platform)
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ubuntuBaseVariants = append(ubuntuBaseVariants, ubuntuBase)
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}
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if _, err := dag.Container().Publish(ctx, ubuntuBaseTag, dagger.ContainerPublishOpts{
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PlatformVariants: ubuntuBaseVariants,
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}); err != nil {
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return fmt.Errorf("failed to publish ubuntu base: %w", err)
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}
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fmt.Printf("Published (multi-arch): %s\n", ubuntuBaseTag)
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// Build and publish tool-specific images
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for toolName, toolDef := range config.Tools {
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// Ubuntu variant
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var ubuntuToolVariants []*dagger.Container
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for _, platform := range platforms {
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ubuntuBase := m.buildUbuntuBase(ctx, config, platform)
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ubuntuTool := m.buildUbuntuTool(ctx, ubuntuBase, toolName, toolDef, platform)
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ubuntuToolVariants = append(ubuntuToolVariants, ubuntuTool)
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}
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ubuntuTag := fmt.Sprintf("ubuntu-%s:%s", toolName, toolDef.Version)
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if registry != "" {
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ubuntuTag = fmt.Sprintf("%s/%s", registry, ubuntuTag)
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}
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if _, err := dag.Container().Publish(ctx, ubuntuTag, dagger.ContainerPublishOpts{
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PlatformVariants: ubuntuToolVariants,
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}); err != nil {
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return fmt.Errorf("failed to publish ubuntu-%s: %w", toolName, err)
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}
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fmt.Printf("Published (multi-arch): %s\n", ubuntuTag)
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// Chainguard variant
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var chainguardToolVariants []*dagger.Container
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for _, platform := range platforms {
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chainguardBase := m.buildChainguardBase(ctx, config, platform)
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chainguardTool := m.buildChainguardTool(ctx, chainguardBase, toolName, toolDef, platform)
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chainguardToolVariants = append(chainguardToolVariants, chainguardTool)
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}
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chainguardTag := fmt.Sprintf("%s:%s", toolName, toolDef.Version)
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if registry != "" {
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chainguardTag = fmt.Sprintf("%s/%s", registry, chainguardTag)
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}
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if _, err := dag.Container().Publish(ctx, chainguardTag, dagger.ContainerPublishOpts{
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PlatformVariants: chainguardToolVariants,
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}); err != nil {
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return fmt.Errorf("failed to publish %s: %w", toolName, err)
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}
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fmt.Printf("Published (multi-arch): %s\n", chainguardTag)
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}
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return nil
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}
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// Build a single tool image
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func (m *Containers) BuildTool(ctx context.Context,
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// Tool name to build (e.g., "kustomize", "dagger")
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tool string,
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// Configuration file
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configFile *dagger.File,
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// Base image type: "ubuntu" or "chainguard"
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// +optional
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// +default="ubuntu"
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base string,
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// Platform to build for
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// +optional
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// +default="linux/amd64"
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platform dagger.Platform,
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) (*dagger.Container, error) {
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// Load configuration
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config, err := m.loadConfig(ctx, configFile)
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if err != nil {
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return nil, fmt.Errorf("failed to load config: %w", err)
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}
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toolDef, ok := config.Tools[tool]
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if !ok {
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return nil, fmt.Errorf("tool %s not found in config", tool)
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}
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var baseImage *dagger.Container
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if base == "ubuntu" {
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baseImage = m.buildUbuntuBase(ctx, config, platform)
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return m.buildUbuntuTool(ctx, baseImage, tool, toolDef, platform), nil
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} else {
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baseImage = m.buildChainguardBase(ctx, config, platform)
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return m.buildChainguardTool(ctx, baseImage, tool, toolDef, platform), nil
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}
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}
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