Add github workflow (#1)

* Add github workflow

.github/workflows/main.yml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - '*'
+  pull_request:
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: install go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.17
+
+      - name: Lint
+        run: make lint
+
+      - name: Tests
+        run: make test
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: tests
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set env
+        run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
+
+      - name: Sign in to dockerhub
+        run: echo "${{ secrets.DOCKERHUB_TOKEN }}" | docker login -u ${{ secrets.DOCKERHUB_USERNAME }} --password-stdin
+
+      - name: Deploy image
+        run: make docker-build VERSION=$RELEASE_VERSION