added the ci pipeline for docker image building

.github/workflows/ci.yaml

@@ -0,0 +1,26 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches: ["main"]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to github container registry
+        env:
+          CR_PAT: ${{secrets.GITHUB_TOKEN}}
+        run: echo $CR_PAT | docker login ghcr.io -u yashgo0018 --password-stdin
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ghcr.io/yashgo0018/maci-api:latest