act/pkg/container/docker_build.go

118 lines
3.5 KiB
Go

//go:build !(WITHOUT_DOCKER || !(linux || darwin || windows))
package container
import (
"context"
"io"
"os"
"path/filepath"
"github.com/docker/docker/api/types"
"github.com/docker/docker/pkg/archive"
// github.com/docker/docker/builder/dockerignore is deprecated
"github.com/moby/buildkit/frontend/dockerfile/dockerignore"
"github.com/moby/patternmatcher"
"github.com/nektos/act/pkg/common"
)
// NewDockerBuildExecutor function to create a run executor for the container
func NewDockerBuildExecutor(input NewDockerBuildExecutorInput) common.Executor {
return func(ctx context.Context) error {
logger := common.Logger(ctx)
if input.Platform != "" {
logger.Infof("%sdocker build -t %s --platform %s %s", logPrefix, input.ImageTag, input.Platform, input.ContextDir)
} else {
logger.Infof("%sdocker build -t %s %s", logPrefix, input.ImageTag, input.ContextDir)
}
if common.Dryrun(ctx) {
return nil
}
cli, err := GetDockerClient(ctx)
if err != nil {
return err
}
defer cli.Close()
logger.Debugf("Building image from '%v'", input.ContextDir)
tags := []string{input.ImageTag}
options := types.ImageBuildOptions{
Tags: tags,
Remove: true,
Platform: input.Platform,
AuthConfigs: LoadDockerAuthConfigs(ctx),
Dockerfile: input.Dockerfile,
}
var buildContext io.ReadCloser
if input.Container != nil {
buildContext, err = input.Container.GetContainerArchive(ctx, input.ContextDir+"/.")
} else {
buildContext, err = createBuildContext(ctx, input.ContextDir, input.Dockerfile)
}
if err != nil {
return err
}
defer buildContext.Close()
logger.Debugf("Creating image from context dir '%s' with tag '%s' and platform '%s'", input.ContextDir, input.ImageTag, input.Platform)
resp, err := cli.ImageBuild(ctx, buildContext, options)
err = logDockerResponse(logger, resp.Body, err != nil)
if err != nil {
return err
}
return nil
}
}
func createBuildContext(ctx context.Context, contextDir string, relDockerfile string) (io.ReadCloser, error) {
common.Logger(ctx).Debugf("Creating archive for build context dir '%s' with relative dockerfile '%s'", contextDir, relDockerfile)
// And canonicalize dockerfile name to a platform-independent one
relDockerfile = archive.CanonicalTarNameForPath(relDockerfile)
f, err := os.Open(filepath.Join(contextDir, ".dockerignore"))
if err != nil && !os.IsNotExist(err) {
return nil, err
}
defer f.Close()
var excludes []string
if err == nil {
excludes, err = dockerignore.ReadAll(f)
if err != nil {
return nil, err
}
}
// If .dockerignore mentions .dockerignore or the Dockerfile
// then make sure we send both files over to the daemon
// because Dockerfile is, obviously, needed no matter what, and
// .dockerignore is needed to know if either one needs to be
// removed. The daemon will remove them for us, if needed, after it
// parses the Dockerfile. Ignore errors here, as they will have been
// caught by validateContextDirectory above.
var includes = []string{"."}
keepThem1, _ := patternmatcher.Matches(".dockerignore", excludes)
keepThem2, _ := patternmatcher.Matches(relDockerfile, excludes)
if keepThem1 || keepThem2 {
includes = append(includes, ".dockerignore", relDockerfile)
}
compression := archive.Uncompressed
buildCtx, err := archive.TarWithOptions(contextDir, &archive.TarOptions{
Compression: compression,
ExcludePatterns: excludes,
IncludeFiles: includes,
})
if err != nil {
return nil, err
}
return buildCtx, nil
}