ci: build docker image and publish to docker hub

.github/workflows/image-build.yaml

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+name: Build Docker Image
+on:
+    push:
+        branches:
+            - main
+jobs:
+    push_to_registery:
+        name: Push Docker Image to Docker Hub
+        runs-on: ubuntu-latest
+        steps:
+            - name: Check out the repo
+              uses: actions/checkout@v4
+
+            - name: Login in to Docker Hub
+              uses: docker/login-action@v3
+              with:
+                  username: ${{ secrets.DOCKER_USERNAME }}
+                  password: ${{ secrets.DOCKER_PASSWORD }}
+
+            - name: Extract metadata (tags and labels) for Docker
+              id: meta
+              uses: docker/metadata-action@v5
+              with:
+                  images: shinthant101/gograte
+
+            - name: Build and Push Docker Image
+              uses: docker/build-push-action@v5
+              with:
+                  context: .
+                  file: ./Dockerfile
+                  push: true
+                  tags: ${{ steps.meta.outputs.tags }}
+                  labels: ${{ steps.meta.outputs.labels }}

Dockerfile

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+FROM golang:bullseye
+
+WORKDIR /app
+
+RUN go install github.com/Shin-Thant/gograte/cmd/gograte@latest
+
+# 1. /bin/bash - start the interactive shell
+# 2. -c - pass the following command to the shell
+# 3. cd /app - change the working directory to /app
+# 4. /bin/bash - start the interactive shell in the new working directory
+CMD ["/bin/bash", "-c", "cd /app && /bin/bash"]
+
+# docker run --name gograte_db -e POSTGRES_PASSWORD=pwd -e POSTGRES_USER=postgres -p 5000:5432 postgres:bullseye