actions: use go version from Makefile

Author: sbueringer

.github/ISSUE_TEMPLATE/kubernetes_bump.md

@@ -57,7 +57,7 @@ run the Cluster API controllers on the new Kubernetes version.
   * Prior art: periodic jobs: https://github.com/kubernetes/test-infra/pull/27326
 * [ ] Bump the Go version in Cluster API: (if Kubernetes is using a new Go minor version)
   * Search for the currently used Go version across the repository and update it
-  * We have to at least modify it in: `.github/workflows`, `hack/ensure-go.sh`, `.golangci.yml`, `cloudbuild*.yaml`, `go.mod`, `Makefile`, `netlify.toml`, `Tiltfile`
+  * We have to at least modify it in: `hack/ensure-go.sh`, `.golangci.yml`, `cloudbuild*.yaml`, `go.mod`, `Makefile`, `netlify.toml`, `Tiltfile`
   * Prior art: #7135
 * [ ] Bump controller-runtime
 * [ ] Bump controller-tools

.github/workflows/dependabot.yml

@@ -17,13 +17,15 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-    - name: Set up Go 1.x
-      uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 # tag=v3.5.0
-      with:
-        go-version: '1.19'
-      id: go
     - name: Check out code into the Go module directory
       uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # tag=v3.3.0
+    - name: Calculate go version
+      id: vars
+      run: echo "go_version=$(make go-version)" >> $GITHUB_OUTPUT
+    - name: Set up Go
+      uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 # tag=v3.5.0
+      with:
+        go-version: ${{ steps.vars.outputs.go_version }}
     - uses: actions/cache@58c146cc91c5b9e778e71775dfe9bf1442ad9a12 # tag=v3.2.3
       name: Restore go cache
       with:

.github/workflows/golangci-lint.yml

@@ -19,9 +19,13 @@ jobs:
           - hack/tools
     steps:
       - uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # tag=v3.3.0
-      - uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 # tag=v3.5.0
+      - name: Calculate go version
+        id: vars
+        run: echo "go_version=$(make go-version)" >> $GITHUB_OUTPUT
+      - name: Set up Go
+        uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 # tag=v3.5.0
         with:
-          go-version: 1.19
+          go-version: ${{ steps.vars.outputs.go_version }}
       - name: golangci-lint
         uses: golangci/golangci-lint-action@08e2f20817b15149a52b5b3ebe7de50aff2ba8c5 # tag=v3.4.0
         with:

.github/workflows/release.yml

@@ -20,10 +20,13 @@ jobs:
         uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # tag=v3.3.0
         with:
           fetch-depth: 0
-      - name: Install go
+      - name: Calculate go version
+        id: vars
+        run: echo "go_version=$(make go-version)" >> $GITHUB_OUTPUT
+      - name: Set up Go
         uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 # tag=v3.5.0
         with:
-          go-version: '^1.19'
+          go-version: ${{ steps.vars.outputs.go_version }}
       - name: generate release artifacts
         run: |
           make release

.github/workflows/scan.yml

@@ -19,9 +19,12 @@ jobs:
       uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # tag=v3.3.0
       with:
         ref: ${{ matrix.branch }}
-    - name: Setup go
-      uses: actions/setup-go@d0a58c1c4d2b25278816e339b944508c875f3613 # tag=v3.4.0
+    - name: Calculate go version
+      id: vars
+      run: echo "go_version=$(make go-version)" >> $GITHUB_OUTPUT
+    - name: Set up Go
+      uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 # tag=v3.5.0
       with:
-        go-version: 1.19
+        go-version: ${{ steps.vars.outputs.go_version }}
     - name: Run verify container script
-      run: make verify-container-images
+      run: make verify-container-images

Makefile

@@ -1208,3 +1208,12 @@ $(GOLANGCI_LINT): .github/workflows/golangci-lint.yml # Download golangci-lint u
 
 $(GINKGO): # Build ginkgo from tools folder.
 	GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) $(GINKGO_PKG) $(GINKGO_BIN) $(GINGKO_VER)
+
+## --------------------------------------
+## Helpers
+## --------------------------------------
+
+##@ helpers:
+
+go-version: ## Print the go version we use to compile our binaries and images
+	@echo $(GO_VERSION)