remove docker workflow for now

.github/workflows/ci.yml

@@ -1,30 +0,0 @@
-name: ci
-
-on:
-  push:
-    branches: [master]
-  pull_request:
-    branches: [master]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    env:
-      DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
-      DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
-    steps:
-      - uses: actions/checkout@v2
-      - name: install go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.16
-      - name: build and test
-        run: make
-      - name: enable experimental docker features
-        if: ${{ github.ref == 'refs/heads/master' }}
-        run: |
-          echo '{"experimental":true}' | sudo tee /etc/docker/daemon.json
-          sudo service docker restart
-      - name: publish multi-arch docker image
-        if: ${{ github.ref == 'refs/heads/master' }}
-        run: make docker-pushx