.github: Use devcontainer to run storage-operator unit-tests

Author: TeddyAndrieux

.github/changed-files.yaml

@@ -34,6 +34,7 @@ unit-tests-metalk8s-operator:
 
 unit-tests-storage-operator:
   - storage-operator/**
+  - .devcontainer/**
 
 unit-tests-salt:
   - salt/**

.github/workflows/pre-merge.yaml

@@ -276,32 +276,29 @@ jobs:
         run: make test
 
   unit_tests_storage_operator:
-    needs: changed-files
-    if: needs.changed-files.outputs.unit-tests-storage-operator == 'true'
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
+    needs:
+      - build-devcontainer
+      - changed-files
+    container:
+      image: ghcr.io/${{ github.repository }}/devcontainer:${{ github.sha }}
+      # We have to use `root` for the moment
+      # Sees: https://github.com/actions/checkout/issues/1575
+      # Could work with a user with 1001 id but not for docker
+      options: --user root
+      credentials:
+        username: ${{ github.repository_owner }}
+        password: ${{ secrets.GITHUB_TOKEN }}
     defaults:
       run:
+        shell: bash
         working-directory: "storage-operator"
+    if: needs.changed-files.outputs.unit-tests-storage-operator == 'true'
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: Install Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: "1.20.14"
-      - name: Cache Go modules
-        uses: actions/cache@v4
-        env:
-          cache-name: cache-go-modules
-        with:
-          path: |
-            ~/.cache/go-build
-            ~/go/pkg/mod
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
+      - name: Set safe directory (since container is root and not user 1001)
+        run: git config --global --add safe.directory $GITHUB_WORKSPACE
       - name: Run all storage-operator unit and integration tests
         run: make test