Add a Docker+wasm sample application featuring a WasmEdge-based microservice, a MySQL database and an Nginx web server for frontend UI files.

Signed-off-by: Michael Yuan <michael@secondstate.io>

wasmedge-mysql-nginx/.docker/docker-compose.yml

@@ -0,0 +1,26 @@
+services:
+  frontend:
+    image: nginx:alpine
+    ports:
+      - 8090:80
+    volumes:
+      - ./frontend:/usr/share/nginx/html
+
+  backend:
+    image: demo-microservice
+    build:
+      context: backend/
+      platforms:
+        - wasi/wasm32
+    ports:
+      - 8080:8080
+    environment:
+      DATABASE_URL: mysql://root:whalehello@db:3306/mysql
+      RUST_BACKTRACE: full
+    restart: unless-stopped
+    runtime: io.containerd.wasmedge.v1
+
+  db:
+    image: mariadb:10.9
+    environment:
+      MYSQL_ROOT_PASSWORD: whalehello