Update coredns images automatically

.github/workflows/update_version.yaml

@@ -4,18 +4,29 @@ on:
   workflow_dispatch:
   schedule:
     - cron: "0 10 * * *"
+  pull_request:
+    branches:
+      - main
 
 jobs:
   generator:
+    name: Generate Step for new CoreDNS versions
     runs-on: ubuntu-latest
     outputs:
       tags: ${{ steps.fetch-upstream.outputs.tags }}
     steps:
+      - name: Prepare environment
+        run: |
+          export DEBIAN_FRONTEND=noninteractive
+          sudo apt-get -qq update
+          sudo apt-get -qq install -y jq
+          sudo snap install yq
+
       - name: Checkout rock repository
         uses: actions/checkout@v4
         with:
           path: coredns-rock
-          ref: main
+          ref: ${{ github.head_ref || 'main' }}
 
       - name: Checkout coredns repository
         uses: actions/checkout@v4
@@ -25,70 +36,50 @@ jobs:
           fetch-tags: true
           fetch-depth: 0
 
-      - name: Get current version from rockcraft.yaml
-        id: currentRockVersion
-        uses: mikefarah/yq@master
-        with:
-          cmd: yq '.version' 'coredns-rock/rockcraft.yaml'
-
-      - name: Fetch and filter upstream tags
+      - name: Itemize all releases
+        id: releases
+        run: |
+          rm -rf versions.txt
+          for rockcraft in $(find coredns-rock -name 'rockcraft.yaml'); do
+            echo $(yq '.version' $rockcraft) >> versions.txt
+          done
+          
+      - name: Craft from Upstream tags
         id: fetch-upstream
         run: |
-          export DEBIAN_FRONTEND=noninteractive
-          sudo apt-get -qq update
-          sudo apt-get -qq install -y jq
-
-          min_tag="v${{ steps.currentRockVersion.outputs.result }}"
-
-          coredns_tags=( $(git -C coredns tag --sort=-v:refname) )
-          pr_tags=()
+          current_releases=( $(sort -V versions.txt) )
+          min_tag="v${current_releases[0]}"
+          coredns_tags=( $(git -C coredns tag --sort=v:refname | sed -n '/'${min_tag}'/,$p') )
+          new_tags=()
 
           for coredns_tag in "${coredns_tags[@]}"
           do
-              if [ "$min_tag" = "$coredns_tag" ]; then
-                  break
-              fi
-
-              pr_tags+=( "${coredns_tag:1}" )
+             if [[ ! -e coredns-rock/${coredns_tag:1}/rockcraft.yaml ]]; then
+               new_tag=${coredns_tag:1}
+               new_tags+=($new_tag)
+               mkdir -p coredns-rock/${new_tag}
+               tag=${new_tag} envsubst < coredns-rock/template/rockcraft.yaml.in > coredns-rock/${new_tag}/rockcraft.yaml
+             fi
           done
 
-          if [ ${#pr_tags[@]} -eq 0 ]; then
+          if [ ${#new_tags[@]} -eq 0 ]; then
               tags='[]'
           else
-              tags=$(printf '%s\n' "${pr_tags[@]}" | jq -R . | jq --compact-output -s .)
+              tags=$(printf '%s\n' "${new_tags[@]}" | jq -R . | jq --compact-output -s .)
           fi
 
           echo $tags
           echo "tags=$tags" >> $GITHUB_OUTPUT
 
-  update:
-    runs-on: ubuntu-latest
-    needs: generator
-    if: ${{ needs.generator.outputs.tags != '[]' }}
-    strategy:
-      matrix:
-        version: ${{ fromJSON(needs.generator.outputs.tags) }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          ref: main
-
-      - name: Update ROCK's source tag
-        uses: mikefarah/yq@master
-        with:
-          cmd: yq -i '.parts.coredns.source-tag = "v${{ matrix.version }}"' 'rockcraft.yaml'
-
-      - name: Update ROCK's version
-        uses: mikefarah/yq@master
+      - name: Commit and push new rockcraft.yaml
+        id: commit-rockcraft
+        if: ${{ steps.fetch-upstream.outputs.tags != '[]' }}
+        uses: peter-evans/create-pull-request@v7
         with:
-          cmd: yq -i '.version = "${{ matrix.version }}"' 'rockcraft.yaml'
-
-      - name: Create pull request
-        uses: peter-evans/create-pull-request@v6
-        with:
-          commit-message: Update CoreDNS version to ${{ matrix.version }}
-          title: "[${{ matrix.version }}] Update CoreDNS version"
-          body: Update CoreDNS version to ${{ matrix.version }}
-          branch: v${{ matrix.version }}
+          commit-message: Update CoreDNS versions with ${{ join(fromJSON(steps.fetch-upstream.outputs.tags), ', ') }}
+          title: "Update CoreDNS versions"
+          body: Update CoreDNS versions with ${{ join(fromJSON(steps.fetch-upstream.outputs.tags), ', ') }}
+          path: coredns-rock
+          branch: autoupdate/sync/coredns
+          delete-branch: true
           base: main

template/rockcraft.yaml.in

@@ -0,0 +1,37 @@
+name: coredns
+summary: ROCK for the CoreDNS Project.
+description: This ROCK is a drop in replacement for the coredns/coredns image.
+version: "${tag}"
+license: Apache-2.0
+
+base: bare
+build-base: [email protected]
+platforms:
+  amd64:
+  arm64:
+
+entrypoint-service: coredns
+services:
+  coredns:
+    override: replace
+    summary: "coredns service"
+    startup: enabled
+    command: "/coredns [ -conf /etc/coredns/Corefile ]"
+    on-failure: shutdown
+
+parts:
+  coredns:
+    plugin: nil
+    source: https://github.com/coredns/coredns
+    source-type: git
+    source-tag: v${tag}
+    source-depth: 1
+    build-packages:
+      - build-essential
+    build-snaps:
+      - go/1.21/stable
+    stage-packages:
+      - ca-certificates_data
+    override-build: |
+      make
+      cp $CRAFT_PART_BUILD/coredns $CRAFT_PRIME