Docker

"Go" Directory

Optimizing an Image using Golang (less than 2MB)

Link Docker Hub

docker pull fabiolnh/docker_desafio_go:latest

Docker-Compose

1. Starting a MySQL Database creating a Database and a Table with a "init" file
2. A Node Application that connects to the Database, inserts a value into the table and prints it on the browser
3. NgInx as a reverse proxy server using the 8080 port redirecting to the node application (Port 3000 inside the Docker network)

Insteresting commands:

• ENTRYPOINT VS CMD:

  Dockerfile: CMD sleep 5
  $ docker run test sleep 10
  Command at startup: sleep 10

  Dockerfile ENTRYPOINT ["sleep"]
  $ docker run test 10
  Command at startup: sleep 10

  Dockerfile ENTRYPOINT ["sleep"] CMD ["5"]
  $ docker run test
  Command at startup: sleep 5
  $ docker run test 10
  Command at startup: sleep 10

  OBS: You can override the entrypoint in the docker run command:
  $ docker run --entrypoint sleep2 test 10
  Command at startup: sleep2 10