ci: add devcontainer publishing

.devcontainer/BUILD.bazel

@@ -0,0 +1,10 @@
+load("@io_bazel_rules_docker//container:container.bzl", "container_push")
+
+container_push(
+    name = "publish-dev-container",
+    format = "Docker",
+    image = "@dev-container//image:dockerfile_image.tar",
+    registry = "docker.pkg.github.com",
+    repository = "roleypoly/roleypoly/dev-container",
+    tag = "{STABLE_GIT_BRANCH}",
+)

.github/workflows/build.yml

@@ -40,3 +40,11 @@ jobs:
           xargs -l1 "${GITHUB_WORKSPACE}/bin/bazel" run \
             --stamp \
             --workspace_status_command hack/workspace_status.sh
+
+      - name: Publish Dev Container Image
+        when: github.ref == refs/heads/main
+        run: |
+          "${GITHUB_WORKSPACE}/bin/bazel" run \
+            --stamp \
+            --workspace_status_command hack/workspace_status.sh\
+              //.devcontainer:publish-dev-container

WORKSPACE

@@ -82,3 +82,19 @@ container_deps()
 load("@io_bazel_rules_docker//repositories:pip_repositories.bzl", "pip_deps")
 
 pip_deps()
+
+# Dev Container stuff
+load("@io_bazel_rules_docker//contrib:dockerfile_build.bzl", "dockerfile_image")
+load("@io_bazel_rules_docker//container:container.bzl", "container_pull")
+
+container_pull(
+    name = "devcontainergo",
+    registry = "mcr.microsoft.com",
+    repository = "vscode/devcontainers/go",
+    tag = "1.15",
+)
+
+dockerfile_image(
+    name = "dev-container",
+    dockerfile = "//.devcontainer:Dockerfile",
+)