fix: use SYNC_DATABASE_URL env var for alembic migrations

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/alembic/env.py

@@ -1,3 +1,4 @@
+import os
 from logging.config import fileConfig
 
 from alembic import context
@@ -9,6 +10,10 @@ config = context.config
 fileConfig(config.config_file_name)
 target_metadata = Base.metadata
 
+# Use SYNC_DATABASE_URL env var if set, otherwise fall back to alembic.ini
+if os.getenv("SYNC_DATABASE_URL"):
+    config.set_main_option("sqlalchemy.url", os.getenv("SYNC_DATABASE_URL"))
+
 
 def run_migrations_offline():
     url = config.get_main_option("sqlalchemy.url")

docker-compose.dev.yml

@@ -0,0 +1,50 @@
+services:
+  db:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: availability
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    ports:
+      - "5433:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    environment:
+      DATABASE_URL: postgresql+asyncpg://postgres:postgres@db:5432/availability
+      SYNC_DATABASE_URL: postgresql://postgres:postgres@db:5432/availability
+    env_file:
+      - .env
+    ports:
+      - "8001:8000"
+    depends_on:
+      db:
+        condition: service_healthy
+    volumes:
+      - ./backend/src:/app/src
+      - ./backend/alembic:/app/alembic
+
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    ports:
+      - "5174:8080"
+    environment:
+      VITE_API_URL: http://localhost:8001
+    depends_on:
+      - backend
+    volumes:
+      - ./frontend/src:/app/src
+
+volumes:
+  postgres_data:

docker-compose.prod.yml

@@ -1,52 +0,0 @@
-services:
-  db:
-    image: postgres:16-alpine
-    environment:
-      POSTGRES_USER: ${POSTGRES_USER:-postgres}
-      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?POSTGRES_PASSWORD required}
-      POSTGRES_DB: ${POSTGRES_DB:-availability}
-    volumes:
-      - postgres_data:/var/lib/postgresql/data
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U postgres"]
-      interval: 5s
-      timeout: 5s
-      retries: 5
-    restart: unless-stopped
-
-  backend:
-    build:
-      context: ./backend
-      dockerfile: Dockerfile
-    environment:
-      DATABASE_URL: postgresql+asyncpg://${POSTGRES_USER:-postgres}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB:-availability}
-      SYNC_DATABASE_URL: postgresql://${POSTGRES_USER:-postgres}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB:-availability}
-      SMTP_HOST: ${SMTP_HOST:-}
-      SMTP_PORT: ${SMTP_PORT:-587}
-      SMTP_USER: ${SMTP_USER:-}
-      SMTP_PASSWORD: ${SMTP_PASSWORD:-}
-      ZULIP_SITE: ${ZULIP_SITE:-}
-      ZULIP_EMAIL: ${ZULIP_EMAIL:-}
-      ZULIP_API_KEY: ${ZULIP_API_KEY:-}
-      ZULIP_STREAM: ${ZULIP_STREAM:-general}
-    ports:
-      - "8000:8000"
-    depends_on:
-      db:
-        condition: service_healthy
-    restart: unless-stopped
-
-  frontend:
-    build:
-      context: ./frontend
-      dockerfile: Dockerfile.prod
-      args:
-        VITE_API_URL: ${VITE_API_URL:?VITE_API_URL required}
-    ports:
-      - "8080:8080"
-    depends_on:
-      - backend
-    restart: unless-stopped
-
-volumes:
-  postgres_data:

docker-compose.yml

@@ -2,49 +2,49 @@ services:
   db:
     image: postgres:16-alpine
     environment:
-      POSTGRES_USER: postgres
+      POSTGRES_USER: ${POSTGRES_USER:-postgres}
-      POSTGRES_PASSWORD: postgres
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?POSTGRES_PASSWORD required}
-      POSTGRES_DB: availability
+      POSTGRES_DB: ${POSTGRES_DB:-availability}
     volumes:
       - postgres_data:/var/lib/postgresql/data
-    ports:
-      - "5433:5432"
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U postgres"]
       interval: 5s
       timeout: 5s
       retries: 5
+    restart: unless-stopped
 
   backend:
     build:
       context: ./backend
       dockerfile: Dockerfile
     environment:
-      DATABASE_URL: postgresql+asyncpg://postgres:postgres@db:5432/availability
+      DATABASE_URL: postgresql+asyncpg://${POSTGRES_USER:-postgres}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB:-availability}
-      SYNC_DATABASE_URL: postgresql://postgres:postgres@db:5432/availability
+      SYNC_DATABASE_URL: postgresql://${POSTGRES_USER:-postgres}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB:-availability}
-    env_file:
+      SMTP_HOST: ${SMTP_HOST:-}
-      - .env
+      SMTP_PORT: ${SMTP_PORT:-587}
-    ports:
+      SMTP_USER: ${SMTP_USER:-}
-      - "8001:8000"
+      SMTP_PASSWORD: ${SMTP_PASSWORD:-}
+      ZULIP_SITE: ${ZULIP_SITE:-}
+      ZULIP_EMAIL: ${ZULIP_EMAIL:-}
+      ZULIP_API_KEY: ${ZULIP_API_KEY:-}
+      ZULIP_STREAM: ${ZULIP_STREAM:-general}
     depends_on:
       db:
         condition: service_healthy
-    volumes:
+    restart: unless-stopped
-      - ./backend/src:/app/src
-      - ./backend/alembic:/app/alembic
 
   frontend:
     build:
       context: ./frontend
-      dockerfile: Dockerfile
+      dockerfile: Dockerfile.prod
-    ports:
+      args:
-      - "5174:8080"
+        VITE_API_URL: ${VITE_API_URL:-}
-    environment:
-      VITE_API_URL: http://localhost:8001
     depends_on:
       - backend
-    volumes:
+    restart: unless-stopped
-      - ./frontend/src:/app/src
+    expose:
+      - '80'
 
 volumes:
   postgres_data:

frontend/Dockerfile.prod

@@ -17,18 +17,12 @@ RUN npm run build
 # Production stage
 FROM nginx:alpine
 
+# Copy built assets
 COPY --from=builder /app/dist /usr/share/nginx/html
 
-# Handle client-side routing
+# Copy nginx config
-RUN echo 'server { \
+COPY nginx.conf /etc/nginx/conf.d/default.conf
-    listen 8080; \
-    root /usr/share/nginx/html; \
-    index index.html; \
-    location / { \
-        try_files $uri $uri/ /index.html; \
-    } \
-}' > /etc/nginx/conf.d/default.conf
 
-EXPOSE 8080
+EXPOSE 80
 
 CMD ["nginx", "-g", "daemon off;"]

frontend/nginx.conf

@@ -0,0 +1,19 @@
+server {
+    listen 80;
+    server_name _;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    location /assets/ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
+    gzip on;
+    gzip_types text/css application/javascript application/json image/svg+xml;
+    gzip_comp_level 6;
+}

frontend/src/api/client.ts

@@ -1,4 +1,5 @@
-const API_URL = import.meta.env.VITE_API_URL || 'http://localhost:8000';
+// Use VITE_API_URL if set at build time, otherwise derive from current origin
+const API_URL = import.meta.env.VITE_API_URL || `${window.location.origin}/api`;
 
 export interface ParticipantAPI {
   id: string;