Cache based on contents

Signed-off-by: Michael Carroll <[email protected]>

.github/actions/bazel-ci-jammy/Dockerfile

@@ -1,16 +1,16 @@
 FROM ghcr.io/gazebo-tooling/gz-ubuntu:garden-jammy
 ARG UID=1000
 
-COPY ["run.sh", "/run.sh"]
-COPY ["entrypoint.sh", "/entrypoint.sh"]
-
 # Add a runner user and group to match github actions
 # Additionally, use passwordless sudo
 RUN groupadd -g 121 runner \
  && useradd -mr -d /home/runner -u 1001 -g 121 runner \
  && usermod -aG sudo runner \
  && echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
 
+COPY ["run.sh", "/run.sh"]
+COPY ["entrypoint.sh", "/entrypoint.sh"]
+
 USER runner
 
 ENTRYPOINT ["/entrypoint.sh"]

.github/actions/bazel-ci-jammy/run.sh

@@ -6,29 +6,13 @@ set -e
 BAZEL_ARGS=$1
 WORKSPACE=~/gz
 BAZEL_CACHE=$GITHUB_WORKSPACE/bazel_cache
-BAZEL=~/.cache/bazelisk-linux-amd64
+BAZEL=$BAZEL_CACHE/bazelisk-linux-amd64
 
-echo ::group::Install tools: apt
-sudo apt update 2>&1
-sudo apt -y install \
-  build-essential \
-  cppcheck \
-  curl \
-  git \
-  gnupg \
-  lsb-release \
-  python3-pip \
-  wget
-
-cd "$GITHUB_WORKSPACE"
 SYSTEM_VERSION=`lsb_release -cs`
 SOURCE_DEPENDENCIES="`pwd`/.github/ci/dependencies.yaml"
 SOURCE_DEPENDENCIES_VERSIONED="`pwd`/.github/ci-$SYSTEM_VERSION/dependencies.yaml"
-echo ::endgroup::
 
-echo ::group::Install tools: pip
-pip3 install -U pip vcstool colcon-common-extensions
-echo ::endgroup::
+cd "$GITHUB_WORKSPACE"
 
 # Restore cache
 if [ ! -d "$BAZEL_CACHE" ]; then
@@ -38,7 +22,7 @@ rm -rf ~/.cache
 ln -sf ${BAZEL_CACHE} ~/.cache
 
 # Install baselisk if it is not already installed
-if [ ! -f "${BAZEL}" ]; then
+if [ ! -f ${BAZEL} ]; then
   wget https://github.com/bazelbuild/bazelisk/releases/download/v1.16.0/bazelisk-linux-amd64 -O ${BAZEL}
 fi
 chmod +x ${BAZEL}

.github/workflows/ci.yml

@@ -25,7 +25,9 @@ jobs:
         with:
           path: |
             ${{ github.workspace }}/bazel_cache
-          key: ${{ runner.os }}-${{ env.cache-name }}
+          key: cache-bazel-${{ hashFiles('example/bazel.repos') }}
+          restore-keys: |
+              cache-bazel-
 
       - name: Compile and test
         uses: ./.github/actions/bazel-ci-jammy