Enabled GHA Docker Cache in Pants (#33)

.github/workflows/pants.yml

@@ -10,6 +10,7 @@ on:
     branches: [main]
   pull_request:
     branches: [main]
+  workflow_dispatch:
 
 jobs:
   build:
@@ -23,6 +24,29 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      # Need to use this action to specify containerd, otherwise it won't cache
+      - uses: crazy-max/ghaction-setup-docker@v3
+        with:
+          daemon-config: |
+              {
+                "features": {
+                  "containerd-snapshotter": true
+                }
+              }
+
+      # This seems to be optional - if you're not doing cross-arch compilation of the container content
+      # - uses: docker/setup-buildx-action@v3
+      #   with:
+      #     install: true
+      #     driver: docker  
+
+      - name: Set up environment variables for Pants (Docker) to use GHA Cache 
+        uses: actions/github-script@v7
+        with:
+          script: |
+            core.exportVariable("ACTIONS_CACHE_URL", process.env.ACTIONS_CACHE_URL || "");
+            core.exportVariable("ACTIONS_RUNTIME_TOKEN", process.env.ACTIONS_RUNTIME_TOKEN || "");
+
       - uses: pantsbuild/actions/init-pants@v9
         with:
           # cache0 makes it easy to bust the cache if needed
@@ -37,6 +61,10 @@ jobs:
         run: |
           pants update-build-files --check lint ::
 
+      - name: Package
+        run: |
+          pants --docker-build-verbose package gcc-arm-none-eabi/:
+
       # - name: Upload pants log
       #   uses: actions/upload-artifact@v2
       #   with:

gcc-arm-none-eabi/BUILD.pants

@@ -1,3 +1,5 @@
 docker_image(
     name="gcc-arm-none-eabi",
+    cache_from=[{"type": "gha", "scope": "gcc-arm-none-eabi-gha"}],
+    cache_to={"type": "gha", "mode": "max", "scope": "gcc-arm-none-eabi-gha"},
 )

gcc-arm-none-eabi/Dockerfile

@@ -7,18 +7,19 @@ ARG DEBIAN_FRONTEND=non-interactive
 
 RUN apt-get update \
     && apt-get install -y -qq --no-install-recommends \
+    bash=5.1-2+deb11u1 \
     bzip2=1.0.8-4 \
     ca-certificates=20210119 \
-    tar=1.34+dfsg-1 \
-    wget=1.21-1+b1 \
+    tar=1.34+dfsg-1+deb11u1 \
+    wget=1.21-1+deb11u1 \
     && rm -rf /var/lib/apt/lists/* \
-    && wget -qO- https://developer.arm.com/-/media/Files/downloads/gnu-rm/10.3-2021.07/gcc-arm-none-eabi-10.3-2021.07-x86_64-linux.tar.bz2 | tar -xj
-
-
+    && wget --progress=dot:giga -O- https://developer.arm.com/-/media/Files/downloads/gnu-rm/10.3-2021.07/gcc-arm-none-eabi-10.3-2021.07-x86_64-linux.tar.bz2 | tar -xj
+
 FROM debian:bullseye-20210902-slim
-
+    
 RUN apt-get update \
     && apt-get install -y -qq --no-install-recommends \
+    bash=5.1-2+deb11u1 \
     ccache=4.2-1 \
     && rm -rf /var/lib/apt/lists/* \
     && groupadd -r armoire \

pants.ci.toml

@@ -2,3 +2,9 @@
 colors = true
 dynamic_ui = false
 pantsd = false
+
+[docker]
+env_vars = [
+  "ACTIONS_CACHE_URL",
+  "ACTIONS_RUNTIME_TOKEN",
+]

pants.toml

@@ -8,6 +8,9 @@ backend_packages = [
     "pants.backend.docker.lint.hadolint",
 ]
 
+[docker]
+use_buildx = true
+
 [python]
 interpreter_constraints = [">=3.9,<4"]