Use Go version in go.mod (#1010)

* Use Go version in go.mod

* Fix typo

.github/workflows/docker.yaml

@@ -27,8 +27,21 @@ on:
       - '!**/*.md'
 
 jobs:
+  go-version:
+    runs-on: ubuntu-latest
+    timeout-minutes: 1
+    outputs:
+      go-version: ${{ steps.go-version.outputs.go-version }}
+    steps:
+      - uses: actions/checkout@v4
+      - id: go-version
+        run: echo "go-version=$(sed -ne '/^go /s/^go //p' go.mod)" >> "$GITHUB_OUTPUT"
+
   build:
+    needs: go-version
     uses: int128/docker-build-workflow/.github/workflows/build.yaml@v1
+    with:
+      build-args: go_version=${{ needs.go-version.outputs.go-version }}
 
   e2e-test:
     runs-on: ubuntu-latest
@@ -37,7 +50,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
-          go-version: 1.21.5
+          go-version-file: go.mod
 
       # set up the test environment
       - uses: actions/create-github-app-token@v1

.github/workflows/go.yaml

@@ -20,5 +20,5 @@ jobs:
   go:
     uses: int128/kubebuilder-workflows/.github/workflows/go.yaml@v1
     with:
-      go-version: 1.21.5
+      go-version-file: go.mod
       golangci-lint-version: v1.55.2

Dockerfile

@@ -1,5 +1,6 @@
 # Build the manager binary
-FROM golang:1.21 as builder
+ARG go_version
+FROM golang:${go_version} as builder
 ARG TARGETOS
 ARG TARGETARCH
 

go.mod

@@ -1,6 +1,6 @@
 module github.com/int128/argocd-commenter
 
-go 1.21
+go 1.21.5
 
 require (
 	github.com/argoproj/argo-cd/v2 v2.9.3