only using 'build' and 'features' to build image

.github/workflows/main.yml

@@ -7,7 +7,7 @@ jobs:
     steps:
 
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
@@ -25,6 +25,16 @@ jobs:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12' 
+
+      - name: Remove "customizations" from devcontainer.json via Python3
+        run: |
+          pip3 install jsmin
+          python3 -c "import jsmin, json; f = open('devcontainer.json', 'r'); data = json.loads(jsmin.jsmin(f.read())); o = {}; o['build']=data['build']; o['features']=data['features']; f.close(); f = open('devcontainer.json', 'w'); f.write(json.dumps(o, indent=4)); f.close()"
 
       - name: Build (latest)
         if: ${{ github.ref == 'refs/heads/main' }}