Auto-upload Linux build

.github/workflows/docker-release.yml

@@ -0,0 +1,21 @@
+name: Docker Release
+
+on:
+  release:
+    types: [released]
+
+jobs:
+  trigger-build:
+    uses: ./.github/workflows/docker.yml
+    with:
+      tag: ${{ github.event.release.tag_name }}
+      secrets: inherit
+  upload-docker:
+    needs: trigger-build
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Upload binary to existing release
+        run: make zip_linux_release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/docker.yml

@@ -1,28 +1,30 @@
-name: docker
+name: Docker Build
 
 on:
   push:
     branches:
       - main
-    tags:
-      - '*'
+  workflow_call:
+    inputs:
+      tag:
+        description: 'Docker tag'
+        required: true
+        type: string
+        default: 'latest'
 
 jobs:
   build:
     runs-on: ubuntu-20.04
     steps:
     - uses: actions/checkout@v4
-    - name: Extract DOCKER_TAG using tag name
-      if: startsWith(github.ref, 'refs/tags/')
-      run: |
-        echo "DOCKER_TAG=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_ENV
-    - name: Use default DOCKER_TAG
-      if: startsWith(github.ref, 'refs/tags/') != true
-      run: |
-        echo "DOCKER_TAG=latest" >> $GITHUB_ENV
+    - name: Set Docker tag
+      if: github.event_name == 'workflow_call'
+      run: echo "DOCKER_TAG=${{ inputs.tag }}" >> $GITHUB_ENV
+    - name: Use default Docker tag
+      if: github.event_name == 'push'
+      run: echo "DOCKER_TAG=latest" >> $GITHUB_ENV
     - name: Set lowercase repository name
-      run: |
-        echo "REPOSITORY_LC=${REPOSITORY,,}" >>${GITHUB_ENV}
+      run: echo "REPOSITORY_LC=${REPOSITORY,,}" >> $GITHUB_ENV
       env:
         REPOSITORY: '${{ github.repository }}'
     - name: Set up Docker Buildx
@@ -31,7 +33,7 @@ jobs:
       uses: docker/login-action@v3
       with:
         username: ${{ github.actor }}
-        password:  ${{ secrets.GITHUB_TOKEN }}
+        password: ${{ secrets.GITHUB_TOKEN }}
         registry: ghcr.io
     - uses: docker/build-push-action@v6
       with:

Releasing.md

@@ -10,5 +10,4 @@ For SwiftLint contributors, follow these steps to cut a release:
 1. Make sure you have the latest stable Xcode version installed and
   `xcode-select`ed
 1. Release new version: `make release "0.2.0: Tumble Dry"`
-1. Wait for the Docker CI job to finish then run: `make zip_linux_release`
 1. Celebrate. :tada: