chore: add an action to automate releases (#3035)

Add a new GitHub action to automate the creation of release pull requests.

.github/workflows/prepare-release.yml

@@ -0,0 +1,88 @@
+name: Prepare Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: New release version
+        required: true
+        type: choice
+        default: minor
+        options:
+          - major
+          - minor
+          - patch
+
+jobs:
+  create-release-pr:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          token: "${{ secrets.RENKUBOT_GITHUB_TOKEN }}"
+      - name: Setup Git
+        run: |
+          git config --global --add user.name "Renku Bot"
+          git config --global --add user.email "[email protected]"
+          git config push.autoSetupRemote true
+      - name: Set up node
+        uses: actions/setup-node@v3
+        with:
+          node-version: "20.11.0"
+      - name: Get old version
+        id: get_old_version
+        run: |
+          VERSION=$(npm version --json | grep "renku-ui" | awk -F: '{ print $2 }' | awk -F'"' '{ print $2 }')
+          echo "$VERSION"
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+        working-directory: ./client
+      - name: Bump client version
+        run: npm version ${{ github.event.inputs.version }}
+        working-directory: ./client
+      - name: Bump server version
+        run: npm version ${{ github.event.inputs.version }}
+        working-directory: ./server
+      - name: Get version
+        id: get_version
+        run: |
+          VERSION=$(npm version --json | grep "renku-ui" | awk -F: '{ print $2 }' | awk -F'"' '{ print $2 }')
+          echo "$VERSION"
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+        working-directory: ./client
+      - name: Bump version in Chart.yaml and values.yaml
+        run: |
+          sed -i -e"s/${{ steps.get_old_version.outputs.version }}/${{ steps.get_version.outputs.version }}/" Chart.yaml values.yaml
+        working-directory: ./helm-chart/renku-ui
+      - name: Create Branch
+        run: git switch -c "release-${{ steps.get_version.outputs.version }}"
+      # TODO: implement this step
+      # - name: Update changelog
+      #   id: changelog
+      #   run: |
+      #     sed -i -E "s/^(.*.. _changelog:)/\1\n\n${{ github.event.inputs.version }}\n$DELIMITER\n\n/" CHANGELOG.rst
+      #     head -n 10 CHANGELOG.rst
+      - name: Commit changes
+        run: |
+          git add client server helm-chart CHANGELOG.md
+          git commit -m "build: release ${{ steps.get_version.outputs.version }}"
+          git push
+      - name: Create Pull Request
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.RENKUBOT_GITHUB_TOKEN }}
+          script: |
+            const { repo, owner } = context.repo;
+            const result = await github.rest.pulls.create({
+              title: 'release ${{ steps.get_version.outputs.version }}',
+              owner,
+              repo,
+              head: 'release-${{ steps.get_version.outputs.version }}',
+              base: 'main',
+              body: [
+                'Release ${{ steps.get_version.outputs.version }}',
+                '',
+                'This PR is auto-generated by [actions/github-script](https://github.com/actions/github-script).',
+                '',
+                '/deploy ',
+              ].join('\n')
+            });