ci: Adds docker build & push (#14)

.github/workflows/push.yml

@@ -0,0 +1,28 @@
+name: push
+on:
+  push:
+    branches: main
+
+jobs:
+  dockerhub:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.9
+          architecture: x64
+      - uses: abatilo/actions-poetry@v2
+        with:
+          poetry-version: "1.6.1"
+      - name: Resolve dependencies
+        run: poetry export -f requirements.txt --without-hashes --output requirements.txt
+      - name: Build docker
+        run: docker build src/. -t quackai/contribution-api:latest
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: quackai
+          password: ${{ secrets.DOCKERHUB_PW }}
+      - name: Push to hub
+        run: docker push quackai/contribution-api:latest