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+# Build Dockerfile
+
+* Dockerfile for nodejs app (Size: 250MB)
+
+  ```sh
+  FROM node:12-alpine
+  
+  # Create app directory
+  WORKDIR /app
+  
+  # Install app dependencies
+  # A wildcard is used to ensure both package.json AND package-lock.json are copied
+  # where available (npm@5+)
+  COPY package*.json ./
+  
+  RUN npm install --only=production
+  # If you are building your code for production
+  # RUN npm ci --only=production
+  
+  # Bundle app source
+  COPY . .
+  
+  EXPOSE 5009
+  CMD [ "node", "server.js" ]
+  ```
+
+  
+
+* use multi-stage (Size: 195MB)
+
+  ```sh
+  # in comparison with node:12-alpine image build, this will reduce by further 50MB
+  # node:12-alpine : 257MB
+  # multistage alpine:3.12 : 195MB
+  #
+  # ------base node------
+  FROM alpine:3.12 AS base
+  # install node
+  RUN apk add --no-cache nodejs nodejs-npm 
+  # Create app directory
+  WORKDIR /app
+  
+  # Install app dependencies
+  # A wildcard is used to ensure both package.json AND package-lock.json are copied
+  # where available (npm@5+)
+  COPY package*.json ./
+  
+  # ------dependencies-------
+  FROM base AS dependencies
+  RUN npm install --only=production
+  # If you are building your code for production
+  # RUN npm ci --only=production
+  # copy production node_modules aside
+  RUN cp -R node_modules prod_node_modules
+  
+  # -----test------
+  # add npm run test if needed
+  
+  # -----release--------
+  FROM base AS release
+  # copy production node_modules
+  COPY --from=dependencies /app/prod_node_modules ./node_modules
+  # Bundle app source
+  COPY . .
+  
+  EXPOSE 5009
+  CMD [ "node", "server.js" ]
+  
+  ```
+
+  
+
+* build
+
+  ```sh
+  $ docker build [-f Dockerfile] . -t razerpay/visa-backend-api
+  
+  // push image
+  $ docker push razerpay/visa-backend-api
+  
+  ```
+
+  
+
+* run
+
+  ```sh
+  $ docker run razerpay/visa-backend-api
+  
+  // enter shell
+  $ docker exec -it <container-name> sh
+  ```
+
+  
+
+* docker-compose
+
+  ```yaml
+  version: '2'
+  services:
+    api: 
+      image: razerpay/visa-backend-api-multi:latest
+      #build: .
+      #command: npm server.js
+      volumes:
+        - ./runconfig/default.json:/app/config/default.json
+        - ./runconfig/ca.crt:/app/config/ca.crt
+        - ./runconfig/root.crt:/app/config/root.crt
+      ports:
+        - "5009:5009"
+      #depends_on:
+      #  - postgres
+      #environment:
+      #  DATABASE_URL: postgres://todoapp@postgres/todos
+    #postgres:
+    #  image: postgres:9.6.2-alpine
+    #  environment:
+    #    POSTGRES_USER: todoapp
+    #    POSTGRES_DB: todos
+  ```
+
+* run docker-compose
+
+  ```sh
+  $ docker-compose up -d
+  ```
+
+  
+
diff --git a/tomcat/FE.PNG b/tomcat/FE.PNG
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+# Quick Guide for Tomcat
+
+* [Download](https://tomcat.apache.org/download-80.cgi) and install the Tomcat server
+
+* Tomcat management [page](http://localhost:8080/manager) 
+
+  * ![](./tomcat-manager.PNG)
+
+* Build the java spring boot project `gradle build`. Artifacts in `build\libs\something.war`
+
+* Copy java `something.WAR` file to `C:\Program Files\Apache Software Foundation\Tomcat 8.5\webapps\ROOT.war`
+
+* run the server on CLI
+
+  ```sh
+  // "jpda" to allow remote attach to debug java code @ port 8000
+  ///
+  C:\Program Files\Apache Software Foundation\Tomcat 8.5\bin> .\catalina.bat jpda start
+  ```
+
+* Tomcat will extract WAR file to `C:\Program Files\Apache Software Foundation\Tomcat 8.5\ROOT`
+
+* Build vueJS FE `npm run-script build`. Build artifacts will be created under `dist`
+
+* Copy vueJS build artifacts contents `dist` to `C:\Program Files\Apache Software Foundation\Tomcat 8.5\ROOT\WEB-INF\classes\public`
+
+* Reload tomcat to refresh the FE component
+  
+  * ![](./FE.PNG)
+  
+* Now you can access the web from browser
+  
+  * FE page : `http://localhost:8080`
+  * BE api : `http://localhost:8080/v1/merchant/...`
+
+# Remote Debugging (IntelliJ)
+
+* Setup remote debugging configuration for
+  * localhost:8000
+
+* ![](./intelliJ-remotedebug.PNG)
+* ![](./tomcat-start.PNG)
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