Refactor CI workflow to separate build jobs for DEV and 3.9-rc1 images

Author: steffengraber

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

@@ -10,12 +10,8 @@ on:
   workflow_dispatch:
 
 jobs:
-  build:
+  build-dev:
     runs-on: ubuntu-latest
-    # Allows parallel jobs without aborting all on first failure
-    strategy:
-      fail-fast: false
-
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -38,6 +34,12 @@ jobs:
           DOCKER_HUB_USERNAME: ${{ secrets.DOCKER_HUB_USERNAME }}
           DOCKER_HUB_ACCESS_TOKEN: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
 
+  build-3-9-rc1:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
       - name: Build 3.9-rc1 Docker image
         run: |
           docker build ./src/3.9 --tag nest/nest-simulator:3.9-rc1