ci: add github actions CI pipeline

Author: rohitbytecode

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+name: HMS Backend CI
+on:
+    push:
+        branches: [ main ]
+    pull_request:
+        branches: [ main ]
+jobs:
+    build:
+        runs-on: ubuntu-latest
+
+        strategy:
+            matrix:
+                node-version: [20.x]
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v4
+
+            - name: Setup Node.js
+              uses: actions/setup-node@v4
+              with:
+                node-version: ${{ matrix.node-version }}
+                cache: 'npm'
+            - name: Install dependencies
+              run: npm ci
+
+            - name: Run Lint
+              run: npm run lint
+
+            - name: Run Tests
+              run: npm test
+            
+            - name: Build docker image
+              run: docker build -t hms-backend:${{ github.sha }} .