docker.md

How to install docker

• Docker's internal repos is not supported on 20.04 yet so
• before installation
  • use a proxy or vpn sudo openconnect 986.9104.945.9196
• sudo apt-get install -y docker.io based on stackoverflow answer
• for getting images form dockerhub
• add nameserver of shekan to /etc/resolve.conf -- (sudo /etc/resolve.conf)
  • nameserver 192.168.1.58
  • nameserver 192.168.1.100
  • nameserver 178.22.122.100
  • nameserver 185.51.200.2
• and sign in to docker
• sudo docker login then enter username and password of docker account based on this answer

How to create a image (Node)

• bease on this tutorial
• create a Dockerfile
• sudo docker build -t yaser/node-hello-app . (run many many times)
  • for each times create a new image if codes have edited
• sudo docker image ls
• sudo docker run --rm -d -p 3000:3001 yaser/node-hello-app
  • 3000 port of my laptop to 3001 of container
• NOTE: if there is error in Dockerfile, the container will not create;