Add nginx-aspnet-mysql implementation (#119)

* Added nginx-aspnet-mysql implementation

Signed-off-by: GitHub <noreply@github.com>

* Updated nginx+aspnet+mysql README.md

Signed-off-by: GitHub <noreply@github.com>

* Added db healthcheck

Signed-off-by: GitHub <noreply@github.com>

nginx-aspnet-mysql/docker-compose.yaml

@@ -0,0 +1,41 @@
+version: "3.7"
+services:
+  backend:
+    build: backend
+    secrets:
+      - db-password
+    depends_on: 
+      - db
+    environment:
+      - ASPNETCORE_URLS=http://+:8000
+    depends_on:
+      db:
+        condition: service_healthy
+  db:
+    image: mysql:8.0.19
+    command: '--default-authentication-plugin=mysql_native_password'
+    restart: always
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "127.0.0.1", "--silent"]
+      interval: 3s
+      retries: 5
+      start_period: 30s
+    secrets:
+      - db-password
+    volumes:
+      - db-data:/var/lib/mysql
+    environment:
+      - MYSQL_DATABASE=example
+      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db-password
+
+  proxy:
+    build: proxy
+    ports:
+      - 80:80
+    depends_on: 
+      - backend
+volumes:
+  db-data:
+secrets:
+  db-password:
+    file: db/password.txt