build: update and split gh workflows (#88)

.github/workflows/docker.yml

@@ -0,0 +1,41 @@
+name: docker
+
+on:
+  push:
+    tags:
+      - '*'
+
+permissions:
+  contents: write
+
+jobs:
+  docker:
+    name: Build and publish Docker images
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Get the tag name
+        run: echo "TAG=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_ENV
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: |
+            ghcr.io/autobrr/autobrr:${{ env.TAG }}
+            ghcr.io/autobrr/autobrr:latest
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}