Add source policies for build

Build{x,kit} support passing in source policies via an (expirimental)
env var.
This change adds those policies to the build request.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

pkg/compose/build.go

@@ -410,28 +410,34 @@ func (s *composeService) toBuildOptions(project *types.Project, service types.Se
  }}
  }
 
+ sp, err := build.ReadSourcePolicy()
+ if err != nil {
+ return build.Options{}, err
+ }
+
  return build.Options{
  Inputs: build.Inputs{
  ContextPath: service.Build.Context,
  DockerfileInline: service.Build.DockerfileInline,
  DockerfilePath: dockerFilePath(service.Build.Context, service.Build.Dockerfile),
  NamedContexts: toBuildContexts(service.Build.AdditionalContexts),
  },
- CacheFrom: pb.CreateCaches(cacheFrom),
- CacheTo: pb.CreateCaches(cacheTo),
- NoCache: service.Build.NoCache,
- Pull: service.Build.Pull,
- BuildArgs: flatten(resolveAndMergeBuildArgs(s.dockerCli, project, service, options)),
- Tags: tags,
- Target: service.Build.Target,
- Exports: exports,
- Platforms: plats,
- Labels: imageLabels,
- NetworkMode: service.Build.Network,
- ExtraHosts: service.Build.ExtraHosts.AsList(":"),
- Ulimits: toUlimitOpt(service.Build.Ulimits),
- Session: sessionConfig,
- Allow: allow,
+ CacheFrom: pb.CreateCaches(cacheFrom),
+ CacheTo: pb.CreateCaches(cacheTo),
+ NoCache: service.Build.NoCache,
+ Pull: service.Build.Pull,
+ BuildArgs: flatten(resolveAndMergeBuildArgs(s.dockerCli, project, service, options)),
+ Tags: tags,
+ Target: service.Build.Target,
+ Exports: exports,
+ Platforms: plats,
+ Labels: imageLabels,
+ NetworkMode: service.Build.Network,
+ ExtraHosts: service.Build.ExtraHosts.AsList(":"),
+ Ulimits: toUlimitOpt(service.Build.Ulimits),
+ Session: sessionConfig,
+ Allow: allow,
+ SourcePolicy: sp,
  }, nil
 }