Lab 2.0: Docker

Summary

This lab was extremely useful for me because I have tried to install Docker before on a fedora server and didn’t understand anything at all. So being able to go over it and actually have well formatted steps I can now say I can understand somewhat how to use Docker and Docker-Compose.

Ubuntu Network Configuration

1. Get network adapter name by using ip addr
2. Edit the file /etc/netplan/00-installer-config.yaml
3. Edit the file to look like below without ()

network:
  version: 2
  renderer: networkd
  ethernets:
    (**adapter name**):
     addresses: [(**ip**)/(**subnet**)]
     gateway4: gateway
     nameservers:
       addresses: [(**dns server ip**)]

1. now run sudo netplan apply or sudo netplan try (if unsure) hit Enter when prompted

Making A New Sudo User

• Make a new user with a user directory useradd -m USERNAME
• Make this account an admin sudo usermod -aG sudo USERNAME

Docker Commands (Outdated 03-20-24)

• docker version | check docker version
• docker-comopose --version | check docker-compose version
• sudo usermod -aG docker USERNAME | To add user to docker group
• docker run hello-world | test if docker is working
• docker run --rm PACKAGE:latest | will run the latest version of a package
  • The --rm means the container will automatically be removed when the container is exited
• docker run NAME | run the specific container
  • docker run -d -P | will run container | -d (—detach) means run container in the background and print container ID | -P (–publish-all) means Publish all exposed ports to random ports
• docker stop NAME | stop the specific container
• docker images | lists all local images on the host
• docker ps | lists all running containers
  • docker ps -a | will list all containers even running
• sudo chmod +x /usr/local/bin/docker-compose | allows you to run docker-compose
• docker-compose up | run docker docker-compose.yml file in current directory
• docker-compose down | stop docker docker-compose.yml file in current directory