ci: Add docker build in main github flow

Author: relekang

.github/workflows/main.yml

@@ -22,3 +22,13 @@ jobs:
     - run: npm run test
       env:
         CI: true
+
+  docker:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 1
+    - name: Build docker image
+      run: docker build -t relekang/graphql-rss-parser:${{ github.sha }}

.github/workflows/upload-docker.yml

@@ -14,7 +14,7 @@ jobs:
       with:
         fetch-depth: 1
     - name: Build docker image
-      run: docker build -t relekang/graphql-rss-parser:${GITHUB_REF##*/} .
+      run: docker build -t relekang/graphql-rss-parser:${GITHUB_REF##*/}
     - name: Tag latest image
       run: docker tag relekang/graphql-rss-parser:${GITHUB_REF##*/} relekang/graphql-rss-parser:latest
     - name: Login to DockerHub Registry