If you don't know Docker, it's said to be a fossil I studied because I couldn't use the famous technology.
For those who are trying to learn Docker but do not understand the outline
Build Docker image Create, execute, and destroy the constructed image on the container Running multiple containers with Compose
Create a container with docker compose and create an environment by linking multiple containers, You will be able to develop. The advantage is that it is lightweight and can be moved quickly.
Read the tutorial, When I try to create one environment while googled Understand how to write docker compose Because dockerfile is a supplement to docker compose If it gets messed up, you won't be able to understand it. Which is explained, docker compose or docker file? If you are conscious, you can understand even one person
How to enter the container docker exec -it container name bash