refactor: migrate LangGraph server from Container App to Azure Web App

## Changes
- Delete Dockerfile and .dockerignore (no longer needed)
- Rewrite deploy-langgraph.yml: zip deploy to Web App (not ACR build)
- Update deploy-langgraph-ui.yml: VITE_LANGGRAPH_URL → soc-langgraph.azurewebsites.net

## Azure Resources
- CREATED: soc-langgraph Web App (Node.js 20, B1 Linux, southeastasia)
- CREATED: soc-langgraph-plan (App Service Plan, B1, southeastasia)
- DELETED: soc-langgraph Container App
- DELETED: soc-cae Container App Environment
- DELETED: socsocacr ACR
- All env vars migrated to Web App
- Startup: npx langgraphjs dev --host 0.0.0.0 --port 2024 --no-browser
- WEBSITES_PORT=2024

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/deploy-langgraph-ui.yml

@@ -31,7 +31,7 @@ jobs:
       - name: Build Vite frontend
         working-directory: langgraph
         env:
-          VITE_LANGGRAPH_URL: https://soc-langgraph.jollysand-7f0f231b.southeastasia.azurecontainerapps.io
+          VITE_LANGGRAPH_URL: https://soc-langgraph.azurewebsites.net
         run: pnpm vite build
 
       - name: Deploy to Azure Static Web Apps

.github/workflows/deploy-langgraph.yml

@@ -1,4 +1,4 @@
-name: Deploy LangGraph Server to Azure Container App
+name: Deploy LangGraph Server to Azure Web App
 
 on:
   push:
@@ -20,6 +20,27 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Setup Node.js 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      - name: Install pnpm and dependencies
+        run: |
+          npm install -g pnpm@10
+          cd langgraph
+          pnpm install --frozen-lockfile
+          # Create .env placeholder (langgraphjs dev requires it)
+          touch .env
+          mkdir -p .langgraph_api
+          echo ".langgraph_api" >> .gitignore
+
+      - name: Package for deployment
+        run: |
+          cd langgraph
+          zip -r ../deploy-langgraph.zip . \
+            -x ".git/*" "dist/*" ".DS_Store"
+
       - name: Login to Azure
         uses: azure/login@v2
         with:
@@ -27,18 +48,8 @@ jobs:
           tenant-id: ${{ secrets.AZUREAPPSERVICE_TENANTID_62D66D4E65AC4A6C872064AD668AC691 }}
           subscription-id: ${{ secrets.AZUREAPPSERVICE_SUBSCRIPTIONID_5D7B0564A55F4209A91149F2642D3F69 }}
 
-      - name: Build and push image to ACR (cloud build)
-        run: |
-          az acr build \
-            --registry socsocacr \
-            --resource-group Operation \
-            --image soc-langgraph:${{ github.sha }} \
-            --image soc-langgraph:latest \
-            langgraph/
-
-      - name: Deploy to Container App
-        run: |
-          az containerapp update \
-            --name soc-langgraph \
-            --resource-group Operation \
-            --image socsocacr.azurecr.io/soc-langgraph:${{ github.sha }}
+      - name: Deploy to Azure Web App
+        uses: azure/webapps-deploy@v3
+        with:
+          app-name: soc-langgraph
+          package: deploy-langgraph.zip

langgraph/.dockerignore

@@ -1,6 +0,0 @@
-node_modules
-.git
-dist
-.env
-*.local
-.DS_Store

langgraph/Dockerfile

@@ -1,26 +0,0 @@
-FROM node:20-slim
-
-# Install pnpm
-RUN npm install -g pnpm@10
-
-WORKDIR /app
-
-# Copy package files and install dependencies
-COPY package.json pnpm-lock.yaml ./
-RUN pnpm install --frozen-lockfile
-
-# Copy source code
-COPY . .
-
-# langgraphjs dev requires .env to exist, and writes .langgraph_api + .gitignore on startup
-# Pre-create these to prevent tsx file watcher from triggering a restart loop
-RUN touch .env && \
-    mkdir -p .langgraph_api && \
-    echo ".langgraph_api" >> .gitignore
-
-# Expose LangGraph server port
-EXPOSE 2024
-
-# Use langgraphjs dev with explicit host binding
-# The --host flag ensures it binds to 0.0.0.0 not just localhost
-CMD ["pnpm", "exec", "langgraphjs", "dev", "--host", "0.0.0.0", "--port", "2024", "--no-browser"]