Add scripts to build and push Docker image to Azure Container Registry

- Created PowerShell script `build-push-acr.ps1` for building and pushing Docker images to ACR.
- Created Bash script `build-push-acr.sh` for the same purpose, ensuring compatibility with Unix-like environments.
- Both scripts handle environment variables, ACR login, Docker image building, and pushing to ACR with error handling.

Author: Vemarthula-Microsoft

Dockerfile.backend

@@ -0,0 +1,34 @@
+# Dockerfile for building backend container from root directory
+# This is used by the ACR preprovision hooks for azd deployment
+
+FROM node:20-alpine AS frontend  
+RUN mkdir -p /home/node/app/node_modules && chown -R node:node /home/node/app
+
+WORKDIR /home/node/app 
+COPY ./src/frontend/package*.json ./  
+USER node
+RUN npm ci  
+COPY --chown=node:node ./src/frontend/ ./frontend  
+WORKDIR /home/node/app/frontend
+RUN npm install --save-dev @types/node @types/jest
+RUN NODE_OPTIONS=--max_old_space_size=8192 npm run build
+  
+FROM python:3.11-alpine 
+RUN apk add --no-cache --virtual .build-deps \  
+    build-base \  
+    libffi-dev \  
+    openssl-dev \  
+    curl \  
+    && apk add --no-cache \  
+    libpq 
+  
+COPY ./src/requirements.txt /usr/src/app/  
+RUN pip install --no-cache-dir -r /usr/src/app/requirements.txt \  
+    && rm -rf /root/.cache  
+  
+COPY ./src/ /usr/src/app/  
+COPY --from=frontend /home/node/app/static  /usr/src/app/static/
+WORKDIR /usr/src/app  
+EXPOSE 80  
+
+CMD ["gunicorn", "-b", "0.0.0.0:80", "app:app"]

azure_custom.yaml

@@ -0,0 +1,52 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/Azure/azure-dev/main/schemas/v1.0/azure.yaml.json
+
+name: document-generation
+metadata:
+  template: document-generation@1.0
+
+requiredVersions:
+  azd: '>= 1.18.0'
+
+# No services defined - Container App is fully managed by Bicep
+# This prevents azd from trying to use its broken Container Apps integration
+
+hooks:
+  preprovision:
+    windows:
+      shell: pwsh
+      run: |
+        ./scripts/auth_init.ps1
+        Write-Host "Building and pushing Docker image to ACR..." -ForegroundColor Yellow
+        ./scripts/build-push-acr.ps1
+      interactive: true
+      continueOnError: false
+    posix:
+      shell: sh
+      run: |
+        ./scripts/auth_init.sh
+        echo "Building and pushing Docker image to ACR..."
+        bash ./scripts/build-push-acr.sh
+      interactive: true
+      continueOnError: false
+  postprovision:
+    windows:
+      run: |
+        ./scripts/auth_update.ps1
+        Write-Host "Web app URL: "
+        Write-Host "$env:WEB_APP_URL" -ForegroundColor Cyan
+        Write-Host "`nIf you want to use the Sample Data, run the following command in the Bash terminal to process it:"
+        Write-Host "bash ./infra/scripts/process_sample_data.sh" -ForegroundColor Cyan
+      shell: pwsh
+      continueOnError: false
+      interactive: true
+    posix:
+      run: |
+        ./scripts/auth_update.sh
+        echo "Web app URL: "
+        echo $WEB_APP_URL
+        echo ""
+        echo "If you want to use the Sample Data, run the following command in the bash terminal to process it:"
+        echo "bash ./infra/scripts/process_sample_data.sh"
+      shell: sh
+      continueOnError: false
+      interactive: true