Remove cruft from CI build workflow file

.github/workflows/ci-workflow.yml

@@ -1,5 +1,3 @@
-# This is a basic workflow to help you get started with Actions
-
 name: CI Build
 
 # Controls when the action will run. 
@@ -17,9 +15,6 @@ on:
 jobs:
   # This workflow contains a single job called "build"
   build:
-#    env:
-#      DOCKER_BUILDKIT: '1'
-#      DOCKER_BUILD_OPTS: "--cache-from=localhost:5000/build-cache --build-arg BUILDKIT_INLINE_CACHE=1"
     # The type of runner that the job will run on
     runs-on: ubuntu-latest
 
@@ -27,29 +22,11 @@ jobs:
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2
+
+      # Enable caching of Docker layers
       - uses: satackey/action-docker-layer-caching@v0.0.8
         continue-on-error: true
-#      - id: cache-docker
-#        uses: actions/cache@v1
-#        with:
-#          path: /tmp/docker-registry
-#          key: docker-registry-buildkit-${{ hashFiles('Dockerfile', 'Makefile', 'pom.xml') }}
-#      - run: |
-#          docker run -d -p 5000:5000 --restart=always --name registry -v /tmp/docker-registry:/var/lib/registry registry:2 && npx wait-on tcp:5000
-#          make build
-#          docker tag netty-incubator-buffer:build localhost:5000/build-cache && docker push localhost:5000/build-cache || true
-#      - name: Prepare docker build cache
-#        run: |
-#          echo ${{ secrets.GITHUB_TOKEN }} | docker login docker.pkg.github.com -u $GITHUB_ACTOR --password-stdin
-#          docker pull docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache || true
-#          export DOCKER_BUILD_OPTS="--cache-from=docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache"
 
       # Run the make script
       - name: Make build
         run: make build
-
-      # Cache build outputs
-#      - name: Save docker build cache
-#        run: |
-#          docker tag netty-incubator-buffer:build docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache
-#          docker push docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache || true