Port number assignment

Dockerfile

@@ -3,5 +3,6 @@ WORKDIR /app
 COPY package.json /app
 RUN npm install
 COPY . /app
-EXPOSE 8900
+# EXPOSE 8900
+EXPOSE 9000
 CMD npm start

docker-compose-build

@@ -0,0 +1,2 @@
+# Build the image and start the container 
+docker-compose up

docker-compose.yml

@@ -7,5 +7,6 @@ services:
     volumes:
       - ./:/app
     ports:
-      - 8900:8900
+      # - 8900:8900
+      - 9000:9000
     command: sh -c "npm install && npm start"

docker-imagebuild

@@ -0,0 +1,4 @@
+# Build the image: docker build -t <image-name> <relative-path-to-dockerfile>
+docker build -t client . 
+# Run the image: docker container run -p <host port:container port> <image-name>  
+docker container run -p 8900:8900 client