Lab 02 - Docker

Things I didn't already know / suffered with

The documentation for Netplan is pretty good, but I had a couple of specific pain points:
- They deprecated gateway4, so you have to use a routes block like
```
    routes:
        - to: default
          via: <gateway_ip>
```
Adding a sudo user was only different because the group is called sudo instead of wheel
- This means usermod -aG sudo <your_user> instead of usermod -aG wheel <your_user>
- You should maybe still also be in wheel too, since I believe it's eval'd for su

docker run - create a container based on a template (imo not as useful as compose stacks)
docker compose <up,down,build> - create or destroy a stack based on a docker-compose.yml
- NOTE THE SPACE docker compose vs docker-compose. The latter is a deprecated version that would require a seperate package install.
docker pull - pull an image from dockerhub (premade containers/containerized apps)