DockerCheatSheet - update for docker 0.7.0

DockerCheatSheet.sh

base image  tracker1/nodejs -- ubuntu 12.04 w/ python 2.7, build tools and nodejs 0.10.22


build docker app, from app dir  :tagname
	sudo docker build -t tracker1/nodejs-demo:1 .

run docker app in bg / -p ### will create random forward for port X
	-d is daemon mode, or & at the end for background

	sudo docker run -d -name demo1 tracker1/nodejs-demo:1
	sudo docker run -name demo1 tracker1/nodejs-demo:1 &
	sudo docker kill demo1
	sudo docker restart demo1

GET IP FOR CONTAINER $CID == 
	sudo docker inspect $CID | grep IPAddress | cut -d '"' -f 4

LIST FORWARD FOR DOCKER
	sudo iptables -t nat -L DOCKER


LIST EXISTING FORWARD RULES (to get position)

	sudo iptables -t nat -L PREROUTING

CREATE FORWARD RULE

	sudo iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 2323 -j DNAT --to 172.17.0.18:2323


REPLACE EXISTING FORWARD RULE ... -R {CHAIN} {rulenum-1-based}

	sudo iptables -t nat -R PREROUTING 2 -i eth0 -p tcp --dport 2323 -j DNAT --to 172.17.0.19:2323


DELETE EXISTING FORWARD RULE ... -D {CHAIN} {rulnum-1-based}

	sudo iptables -t nat -D PREROUTING 2




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michaelr@ubuntu:~$ sudo iptables -t nat -A DOCKER -p tcp --dport 4001 -j DNAT --to-destination 127.0.0.1:4001
michaelr@ubuntu:~$ sudo iptables -t nat -L DOCKER --line-numbers
Chain DOCKER (2 references)
num  target     prot opt source               destination
1    DNAT       tcp  --  anywhere             anywhere             tcp dpt:4001 to:127.0.0.1:4001
michaelr@ubuntu:~$ sudo iptables -t nat -D DOCKER 1
michaelr@ubuntu:~$ sudo iptables -t nat -L DOCKER --line-numbers
Chain DOCKER (2 references)
num  target     prot opt source               destination
michaelr@ubuntu:~$