Docker engine

Docker(Docker Engine)
• Define

1. Docker provides a way to run applications securely isolated in a container, packaged with all its dependencies and libraries.2. Containers are a way to package software in a format that can run isolated on a shared operating system. Unlike VMs, containers do not bundle a full operating system - only libraries and settings required to make the software work are needed

• Structure

the client-server application made up of the Docker daemon, a REST API that specifies interfaces for interacting with the daemon,and a command line interface (CLI) client that talks to the daemon (through the REST API wrapper).

• CLI
○ https://docs.docker.com/engine/reference/run/
○ Sample

    § docker --help    § docker build -t songgs/apache-php-mysql:20m .    § docker run -d -p 8080:80 -u 0:0 --name wplocal -v /var/LWASFiles/Sites/new2/home:/home -e PORT="80"    appsvc/apps:wordpress    § docker exec -it containerid bash    § docker push songgs/apache-php-mysql:20m    § docker rmi –f $(docker images -q -f dangling=true)     § docker rm -f $(docker ps -aq -f status=exited)

• Learn : 中文版

Docker Image

1. Apache-PHP-MySQL
   PHP installed as apache module: http://php.net/manual/en/security.apache.php
2. Nginx-PHP
3. Python
   nginx <-> /tmp/uwsgi.sock <-> uWSGI <-> Python app <-> Psycopg2 <-> remote PostgreSQL database