Make the container images public. (#170)
Make the container images public. (#170)

This allows them to be pushed into a registry from within a different
workspace.
bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm