F tar

[ybogdanov]

dev/test_artifacts.yml:

namespace: test_artifacts
containers:
  main:
    image: {{ image "alpine:3.2" }}

dev/artifacts/1.yml:

RockerArtifacts:
- Name: alpine:3.2
  Digest: sha256:afa123

Test command:

rocker-compose tar -f dev/test_artifacts.yml dev/artifacts/\* | rocker-compose run -f - -tar -print

Output

namespace: test_artifacts
containers:
  main:
    image: alpine@sha256:afa123

[romank87]

looks like you forgot to vendor 'gopkg.in/yaml.v2'