message: fix: add buildx setup
diff: @@ -11,7 +11,7 @@ jobs:
  github.event.pull_request.merged &&
  endsWith(github.event.pull_request.title, '/workflows/cd-containers') &&
  github.event.pull_request.user.login != 'polywrap-build-bot'
  - runs-on: ubuntu-18.04
  + runs-on: ubuntu-20.04
  steps:
  - name: Checkout
  uses: actions/checkout@v3
  @@ -29,6 +29,9 @@ jobs:
  env:
  CREATOR: ${{github.event.pull_request.user.login}}
  + - name: Set up Docker Buildx
  + uses: docker/setup-buildx-action@v2
  +
  - name: Login to Docker Hub
  uses: docker/login-action@v2
  with:
  @@ -49,7 +52,7 @@ jobs:
  - name: Check if image tags already exist
  run: |
  - echo IMAGE_RS_VM_UNPUBLISHED=$(docker manifest inspect polywrap/vm-base-rs:0.2.0 > /dev/null ; echo $?) >> $GITHUB_ENV
  + echo IMAGE_RS_VM_UNPUBLISHED=$(docker manifest inspect $IMAGE_RS_VM_NAME:$IMAGE_RS_VM_VERSION > /dev/null ; echo $?) >> $GITHUB_ENV
  echo IMAGE_AS_VM_UNPUBLISHED=$(docker manifest inspect $IMAGE_AS_VM_NAME:$IMAGE_AS_VM_VERSION > /dev/null ; echo $?) >> $GITHUB_ENV
  - name: Build & Publish RS VM Image
  