ci: Add an Action to build and push to DockerHub

Author: Pradumnasaraf

.github/workflows/publish.yml

@@ -0,0 +1,24 @@
+name: Build and Publish Docker Image to Docker Hub
+
+on:
+  push:
+    branches: ["main"]
+    
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      
+      - name: DockerHub Login
+        uses: docker/login-action@v2.1.0
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      - name: Build the Docker image
+        run: docker build . --file Dockerfile --tag ${{ secrets.DOCKERHUB_USERNAME }}/devops
+
+      - name: Docker Push
+        run: docker push ${{ secrets.DOCKERHUB_USERNAME }}/devops

Dockerfile

@@ -1,4 +1,4 @@
-FROM nginx:1.23.2
+FROM nginx:1.23.3-alpine
 WORKDIR /usr/share/nginx/html
 COPY . .
 EXPOSE 80

docker-compose.yaml

@@ -2,9 +2,10 @@ version: '3.9'
 
 services:
   devops-website:
-    container_name: website
+    container_name: devops-website
     build: 
       context: .
       dockerfile: Dockerfile
+    image: devops-website
     ports:
       - 8000:80