created github actions workflow for docker image pushing

.github/workflows/docker-image.yml

@@ -0,0 +1,42 @@
+name: Docker Image CI/CD
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  push_to_registry:
+    name: Push Docker Image to Docker Hub
+    if: github.event_name == 'push'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check Repository
+        uses: actions/checkout@v4
+
+      - name: Login to Docker Registry
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_HUB_EMAIL }}
+          password: ${{ secrets.DOCKER_HUB_PASSWORD }}
+
+      - name: Build and Push Docker Image to Registry
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: teamfemrdev/teamfemr:latest
+
+  build:
+    name: Build Docker Image on Pull Request
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check Repository
+        uses: actions/checkout@v4
+
+      - name: Build the Docker Image
+        run: docker build . --file Dockerfile --tag femr-femr:latest

.gitignore

@@ -29,6 +29,9 @@ hs_err_pid*
 # except for .gitignore
 !.gitignore
 
+#except for .github/workflows
+!.github
+
 conf/application.conf
 conf/application.*.conf
 conf/application.example.conf