Get Started
Create a Dockerfile
Build a Docker Image
docker build -t testbed13 .
Images
List Docker Images
docker images
Save/Load images
docker save -o <save image to path> <image name>
docker load -i <path to image tar file>
Remove Images
docker rmi IMAGE_ID
docker rmi $(docker images -q)
Container
List Containers
List the running containers:
docker ps
List all containers：
docker ps -a
Run a Container from a Docker Image
docker run -i -t ID_or_Name /bin/bash
docker run -it -d --name=demo testbed13 /bin/bash
Run a container with exposed port
Port: external:internal
docker run -p 8082:8080 gmuwps
Get into a Docker Containers
docker exec -t -i ID_or_Name /bin/bash
Stop Containers
Stop container:
Stop all containers:
docker rm $(docker ps -a -q)
Remove Containers
Remove Containers:
docker rm ID_or_Name ID_or_Name
Remove All Exited Containers:
docker rm $(docker ps -a -f status=exited -q)
Docker Login
Login to Docker Hub
docker login --username=czhang11 --email=czhang11@gmu.edu
Pull Image
Docker Pull
docker pull java:7
Docker Q&A
DNS Resolving Issue
Error
Resolving issue while building docker container:
...
Temporary failure resolving 'security.debian.org'
...
Solution
Get the DNS server info:
nmcli dev show | grep IP4.DNS
Output would be like:
IP4.DNS[1]: 192.168.1.236
IP4.DNS[2]: 129.174.67.98
IP4.DNS[3]: 129.174.1.3
Update the nameserver in /etc/resolv.conf
# nameserver 127.0.0.1
nameserver 129.174.67.98