add env keys in actions workflow

.github/workflows/ci.yml

@@ -17,10 +17,22 @@ jobs:
       uses: actions/checkout@v4
       # run: docker build . --file Dockerfile --tag my-image-name:$(date +%s)
     - name: Generate sha
+
       id: generate_sha
       run: |
         SHA=$(echo $GITHUB_SHA | head -c7)
         echo "sha=$SHA" >> $GITHUB_OUTPUT
+
     - name: Build docker image
       run: |
         docker build -t rogeriojr/projeto-nlw-node-fastify:${{ steps.generate_sha.outputs.sha }} .
+
+    - name: Log into the container register
+      uses: docker/login-action@v3
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+    - name: Push image
+      run: |
+        docker push rogeriojr/projeto-nlw-node-fastify:${{ steps.generate_sha.outputs.sha }}