ci: support releases on next branch (#5599)

Co-authored-by: Copilot <copilot@github.com>

.github/workflows/deployment-docker-image.yml

@@ -5,6 +5,7 @@ on:
     branches:
       - main
       - beta
+      - next
       - dev
   workflow_dispatch:
     inputs:
@@ -34,7 +35,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     env:
-      SKIP_RELEASE: ${{ github.event_name == 'workflow_dispatch' || github.ref_name == 'dev' }}
+      SKIP_RELEASE: ${{ github.event_name == 'workflow_dispatch' || github.ref_name == 'dev' || github.ref_name == 'next' }}
     outputs:
       version: ${{ steps.read-semver.outputs.version || steps.version-fallback.outputs.version }}
       git_ref: ${{ steps.read-git-ref.outputs.ref || github.ref }}
@@ -54,7 +55,7 @@ jobs:
         with:
           private-key: ${{ secrets.RENOVATE_MERGE_PRIVATE_KEY }}
           app-id: ${{ secrets.RENOVATE_MERGE_APP_ID }}
-          permission-contents: write # required to commit package.json & changelog changes, merge them to dev and publish the release
+          permission-contents: write # required to commit package.json & changelog changes, merge them to dev / next and publish the release
 
       - uses: actions/checkout@v6
         if: env.SKIP_RELEASE == 'false'
@@ -95,20 +96,21 @@ jobs:
         id: read-git-ref
         run: |
           echo "ref=$(git rev-parse HEAD)" >> "$GITHUB_OUTPUT"
-      - name: Update dev branch
+      - name: Update dev / next branch
         if: env.SKIP_RELEASE == 'false'
         continue-on-error: true # Prevent pipeline from failing when merge fails
         env:
           GITHUB_TOKEN: ${{ steps.obtainToken.outputs.token }}
+          UPSTREAM_BRANCH: ${{ github.ref_name == 'main' && 'dev' || 'next' }}
         run: |
           git config user.name "Releases Homarr"
           git config user.email "175486441+homarr-releases[bot]@users.noreply.github.com"
           git remote set-url origin https://x-access-token:${{ steps.obtainToken.outputs.token }}@github.com/${{ github.repository }}.git
-          git fetch origin dev
-          git checkout dev
-          git pull origin dev
+          git fetch origin ${{ env.UPSTREAM_BRANCH }}
+          git checkout ${{ env.UPSTREAM_BRANCH }}
+          git pull origin ${{ env.UPSTREAM_BRANCH }}
           git rebase ${{ github.ref_name }}
-          git push origin dev
+          git push origin ${{ env.UPSTREAM_BRANCH }}
   build-amd64:
     name: Build docker image for amd64
     needs: release