DavidKHahn/Docker-Compose-Review

Tool designed to make it easier to create, deploy, and run applications by using containers.

Docker Compose Setup and Review:

Docker bundles your application into an image which is a standalone executable package. Docker executes the image inside a container and the environment inside the container is completely isolated from the host machine.

• Efficient
• Lightweight
• Self-Contained
• Able to run safe anywhere and everywhere

Useful Links:

• https://hub.docker.com/_/node (Node container setup)
• INFO on "bin/bash": https://unix.stackexchange.com/questions/398543/what-are-the-contents-of-bin-bash-and-what-do-i-do-if-i-accidentally-overwrote
• Dockerfile commands: https://docs.docker.com/engine/reference/builder/#usage
• https://stackoverflow.com/questions/34809646/what-is-the-purpose-of-volume-in-dockerfile (Docker Volumes)
• https://www.linux.com/learn/docker-volumes-and-networks-compose (More on Docker Volumes)
• https://hub.docker.com/_/postgres/ (Docker Postgres Setup Guidelines)

Docker Commands

(NOTE: everytime the yml files are changed you need to run: 'docker-compose build' to reread file)

• docker build -t superawesomecontainer . creates a Docker container
• docker run -it superawesomecontainer runs the Docker container
• docker run -it -p 3000:3000 superawesomecontainer runs Docker container using PORT
• docker run -t -d superawesomecontainer runs Docker in the background
• docker ps can see all the containers that are running
• docker exec -it INSERT_HASH_HERE bash access to Docker container
• docker stop INSERT_HASH_HERE stops container from running

Docker Compose commands:

• docker-compose build uses Docker Compose to build an image file
• docker-compose run NAME_OF_API_OR_CONTAINER runs Docker Compose container
• docker-compose down brings back down any Docker containers running in the background
• docker-compose up --build command aggregates the output of each container and builds initial container
• docker-compose up to bring back up a Docker container prev. built
• docker-compose up -d to bring back up container in the background
• docker-compose exec NAME_OF_CONTAINER bash access to container bash
• docker-compose down -v removes volumes
• docker-compose rm -v NAME_OF_VOLUME removes specific volume