fix: merge docker ENV into one layer (#523)

Dockerfile

@@ -1,4 +1,3 @@
-# https://stackoverflow.com/questions/65612411/forcing-docker-to-use-linux-amd64-platform-by-default-on-macos/69636473#69636473
 FROM node:18
 
 # Create app directory
@@ -7,13 +6,12 @@ WORKDIR /usr/src/app
 # Install app dependencies
 COPY . .
 
-RUN npm config set registry https://registry.npmmirror.com \
-  && npm install -g npminstall \
-  && npmupdate -c \
+RUN npm install -g npminstall --registry=https://registry.npmmirror.com \
+  && npminstall -c \
   && npm run tsc
 
-ENV NODE_ENV=production
-ENV EGG_SERVER_ENV=prod
+ENV NODE_ENV=production \
+  EGG_SERVER_ENV=prod
 
 EXPOSE 7001
 CMD ["npm", "run", "start:foreground"]