Use golang image to run tests step

Signed-off-by: Aurel Canciu <aurelcanciu@gmail.com>

.github/actions/run-tests/Dockerfile

@@ -0,0 +1,12 @@
+FROM golang:1.15-alpine
+
+# Add any build or testing essential system packages
+RUN apk add --no-cache build-base git
+
+# Use the GitHub Actions uid:gid combination for proper fs permissions
+RUN addgroup -g 116 -S test && adduser -u 1001 -S -g test test
+
+# Run as test user
+USER test
+
+ENTRYPOINT ["/bin/sh", "-c"]

.github/actions/run-tests/action.yml

@@ -0,0 +1,12 @@
+name: 'Run tests'
+description: 'Run tests in docker container'
+inputs:
+  command:
+    description: 'Command to run inside the container'
+    required: true
+    default: 'make test'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+  args:
+    - ${{ inputs.command }}

.github/workflows/e2e.yaml

@@ -15,14 +15,10 @@ jobs:
       - name: Restore Go cache
         uses: actions/cache@v1
         with:
-          path: ~/go/pkg/mod
+          path: /home/runner/work/_temp/_github_home/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
           restore-keys: |
             ${{ runner.os }}-go-
-      - name: Setup Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.15.x
       - name: Setup Kubernetes
         uses: engineerd/setup-kind@v0.5.0
       - name: Setup Kustomize
@@ -32,8 +28,9 @@ jobs:
       - name: Setup Helm
         uses: fluxcd/pkg/actions/helm@main
       - name: Run tests
-        run: make test
+        uses: ./.github/actions/run-tests
         env:
+          GOPATH: /github/home/go
           KUBEBUILDER_ASSETS: ${{ github.workspace }}/kubebuilder/bin
       - name: Check if working tree is dirty
         run: |