InspiredEnigma12477/docker_NodeJS.md

## docker_NodeJS.md

      
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              docker_NodeJS.md
            
          
    Docker Commands for NodeJS App

Get to sudo Mode


just because you can

sudo su

Update the Linux Distro

This is for the AWS Linux EC2

yum update 

Install git to clone the repo

yum intsall git

Install Docker

yum install docker

Check the status Docker Process

systemctl status docker

Start the Docker Process

systemctl enable docker
systemctl start docker

Clone the repo with simple NodeApp

In this we have created a simple Express app that can take the user input of firstname and lastname and display the output
git clone https://github.com/InspiredEnigma12477/nodeapp.git
cd nodeapp

Dockerfile


Note : Name the file as Dockerfile

FROM node:7
WORKDIR /app
COPY package.json /app
RUN npm install
COPY . /app
CMD node server.js
EXPOSE 6969


Note : Possible errors

you have created the file inside the  src, it should be at root directory
given unwanted spaces
Dockerfile name is case-sensitive
node:7 not working use node:latest
look for silly mistakes like spelling, cases !! 😅


Build the docker image using the Docker file from the repo

In this we use build alias to build the image and -t to give an alias or nametag to the image
docker build -t nodeapp .

List the Available Docker Images

docker images

Run the image

In this we run the images mentioned with the

external Port 8000
internal port 6969
-d for Run container in background and print container ID
-p for Publishing a container's port(s) to the host

docker run -d -p 8000:6969 nodeapp

Docker Process Status

docker ps

Docker close the process

docker kill hashcode

Docker remove the image from the machine

docker rmi <name_image OR hashcode>  -f