Refactor Docker setup and migrate to PostgreSQL

Streamlined Dockerfiles with clearer ENV variables and build args. Switched backend database from MySQL to PostgreSQL, updated configurations accordingly, and added robust Docker Compose services for better orchestration, including health checks and persistent storage.

frontend/Dockerfile

@@ -9,7 +9,7 @@ ARG VITE_SSL_KEY_PATH
 ARG VITE_SSL_CERT_PATH
 ARG NODE_ENV=development
 
-ENV VITE_OPENAPI_BASE_DEV=${VITE_OPENAPI_BASE_DEV}
+ENV VITE_OPENAPI_BASE_=${VITE_OPENAPI_BASE}
 ENV VITE_SSL_KEY_PATH=${VITE_SSL_KEY_PATH}
 ENV VITE_SSL_CERT_PATH=${VITE_SSL_CERT_PATH}
 ENV NODE_ENV=${NODE_ENV}