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Multi_container.md

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Be creative

Use a scenario with 2-3 different containers e.g. web-app, database and cache, or load-balancer.

First try to connect the containers manually

Your procedure could look as follows

  1. Build a db container in other words choose your image
docker run -d --name=mongo mongodb
  • You can also use RavenDb, MS-SQL, Postgres ... depending on your preference. But from a docker perspective it doesn't change too much :)
  1. Build your api-server image
  • using .net core or nodejs (express) or what ever you like.
  1. Connect to two containers
  • Define port mappings and link the two containers.
  1. But you will notice ... manual work is tedious .. but compose to the rescue :)

Docker compsose

Docker-compose overview

# basic compose cli

# building a compose file (using docker-compose.yml)
docker-compose build .
# build using different file name
docker-compose build -f my-compose.yml .

# starts your services interactive
docker-compose up .
# detached mode
docker-compose up -d .

# Stops containers and removes containers, networks, volumes, and images created by up
docker-compose down

# Removes stopped service containers
docker-compose rm

# for inspecting your service
docker-compose top


# "UI" to try out (portainer.io)

- https://portainer.io/install.html