From 0bc79b8834034afbf153a0230c67ef212708e481 Mon Sep 17 00:00:00 2001
From: Horst Gutmann <horst.gutmann@grafana.com>
Date: Mon, 15 Jan 2024 17:00:48 +0100
Subject: [PATCH] chore: Use Dockerfile as source for the Go version

---
 .github/actions/setup-goversion/action.yml | 11 +++++++++++
 .github/workflows/release.yml              |  4 +---
 .github/workflows/tests.yml                | 12 +++---------
 3 files changed, 15 insertions(+), 12 deletions(-)
 create mode 100644 .github/actions/setup-goversion/action.yml

diff --git a/.github/actions/setup-goversion/action.yml b/.github/actions/setup-goversion/action.yml
new file mode 100644
index 000000000..2570615af
--- /dev/null
+++ b/.github/actions/setup-goversion/action.yml
@@ -0,0 +1,11 @@
+name: setup-goversion
+runs:
+  using: composite
+  steps:
+    - id: goversion
+      run: |
+        cat Dockerfile | awk '/^FROM golang:.* as build$/ {v=$2;split(v,a,":")}; END {printf("version=%s", a[2])}' >> $GITHUB_OUTPUT
+      shell: bash
+    - uses: actions/setup-go@v5
+      with:
+        go-version: "${{steps.goversion.outputs.version}}"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d374c8eb1..863a658ec 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,9 +15,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-tags: true
-      - uses: actions/setup-go@v5
-        with:
-          go-version: '1.20'
+      - uses: ./.github/actions/setup-goversion
       - run: make cross
       - id: docker_tag
         run: echo "DOCKER_TAG=${GITHUB_REF_NAME#v}" >> "$GITHUB_ENV"
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index cccee8942..24969d893 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,18 +13,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
-        with:
-          go-version: '1.20'
+      - uses: ./.github/actions/setup-goversion
       - run: make lint
   
   test:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
-        with:
-          go-version: '1.20'
+      - uses: ./.github/actions/setup-goversion
       - uses: azure/setup-helm@v3
         with:
           version: '3.13.1' 
@@ -36,7 +32,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
-        with:
-          go-version: '1.20'
+      - uses: ./.github/actions/setup-goversion
       - run: make cross