第一章

最简单的 hello_world/Dockerfile

FROM busybox:latest
CMD ["echo", "hello world"]

第二章

docker run --detach \
--name web \
 nginx:latest

docker run -d \
--name mailer \
dockerinaction/ch2_mailer


docker run --interactive --tty \
--link web:web \
--name web_test \
busybox:1.29 /bin/sh


docker run -it \
--name agent \
--link web:insideweb \
--link mailer:insidemailer \
dockerinaction/ch2_agent

docker ps

# 
docker run -d --name namespaceA \
busybox:1.29 /bin/sh -c "sleep 30000"
docker run -d --name namespaceB \
busybox:1.29 /bin/sh -c "nc -l 0.0.0.0 -p 80"

docker exec namespaceA ps
docker exec namespaceB ps

docker run --pid host busybox:1.29 ps


docker run -d --name webConflict nginx:latest

docker logs webConflict

docker exec webConflict nginx -g 'daemon off;'

# 解决方案
docker run -d --name webA nginx:latest
docker logs webA  
docker run -d --name webB nginx:latest
docker logs webB

# 容器ID写入文件

CID=$(docker ps --latest --quiet)
echo $CID

CID=$(docker ps -l -q)
echo $CID

MAILER_CID=$(docker run -d dockerinaction/ch2_mailer) 

WEB_CID=$(docker create nginx)

AGENT_CID=$(docker create --link $WEB_CID:insideweb \
--link $MAILER_CID:insidemailer \
dockerinaction/ch2_agent)

echo  $MAILER_CID
echo  $AGENT_CID

# wrong
docker start $AGENT_CID
docker start $WEB_CID

# right
docker start $WEB_CID
docker start $AGENT_CID


MAILER_CID=$(docker run -d dockerinaction/ch2_mailer)
WEB_CID=$(docker run -d nginx)
AGENT_CID=$(docker run -d \
--link $WEB_CID:insideweb \
--link $MAILER_CID:insidemailer \
dockerinaction/ch2_agent)


docker run -d --name wp --read-only wordpress:5.0.0-php7.2-apache

docker inspect --format "{{.State.Running}}" wp

docker logs wp






docker run -d --name wp_writable wordpress:5.0.0-php7.2-apache

docker container diff wp_writable




docker run -d --name wp2 --read-only -v /run/apache2/ --tmpfs /tmp wordpress:5.0.0-php7.2-apache 
docker logs wp2


docker run -d --name wpdb -e MYSQL_ROOT_PASSWORD=ch2demo mysql:5.7

docker run -d --name wp3 --link wpdb:mysql -p 8000:80 --read-only -v /run/apache2/ --tmpfs /tmp  wordpress:5.0.0-php7.2-apache  


docker inspect --format "{{.State.Running}}" wp3




#!/bin/sh
DB_CID=$(docker create -e MYSQL_ROOT_PASSWORD=ch2demo mysql:5.7)
docker start $DB_CID
MAILER_CID=$(docker create dockerinaction/ch2_mailer)
docker start $MAILER_CID
WP_CID=$(docker create --link $DB_CID:mysql -p 80 \
--read-only -v /run/apache2/ --tmpfs /tmp \
wordpress:5.0.0-php7.2-apache)
docker start $WP_CID
AGENT_CID=$(docker create --link $WP_CID:insideweb \
--link $MAILER_CID:insidemailer \
dockerinaction/ch2_agent)
docker



#!/bin/sh
if [ ! -n "$CLIENT_ID" ]; then  
echo "Client ID not set"
exit 1
fi
WP_CID=$(docker create \
--link $DB_CID:mysql \ 
--name wp_$CLIENT_ID \
-p 80 \
--read-only -v /run/apache2/ --tmpfs /tmp \
-e WORDPRESS_DB_NAME=$CLIENT_ID \
--read-only wordpress:5.0.0-php7.2-apache)
docker start $WP_CID
AGENT_CID=$(docker create \
--name agent_$CLIENT_ID \
--link $WP_CID:insideweb \
--link $MAILER_CID:insidemailer \
dockerinaction/ch2_agent)
docker start $AGENT_CID

# 容器的状态和依赖


# 清理
docker rm -vf $(docker ps -a -q)

题外话：3句话的魅力

docker create --name mysql_data_container \
 -v /var/lib/mysql ubuntu

docker run --volumes-from mysql_data_container \
 -v /var/lib/mysql:/var/lib/mysql \
 -e MYSQL_USER=mysql \
 -e  MYSQL_PASSWORD=mysql  \
 -e MYSQL_DATABASE=test  \
 -e MYSQL_ROOT_PASSWORD=test -it \
 -p 3306:3306  \
 -d mysql

docker run -d  \
--name  wordpress  \
--link mysql:mysql \
wordpress

可能 容器id小问题

命令小结

docker images
docker search nginx
docker run -d   --name xxx1  nginx
docker run -it  --name xxx2  nginx 
docker run --link original_container_name:new_name xxx  # 允许link多个

docker ps
docker ps -a
docker restart xxx
docker stop xxxx

docker logs xxx