Build an Image
Make sure that Dockerfile is present in the folder you’re running this command in.
docker build -t <name> .
List Images
docker image ls
Running Image
In this example, port 4000 is exposed to the end user and it’s mapped to port 80. Name is not necessary because if not specified, then it’s auto-generated.
docker run -name <name> -p 4000:80 <image name>
List Containers
docker ps
Kill Containers
docker kill <container id>
Helpful way to stop all containers, remove all containers and remove all images
docker kill $(docker ps -q) && docker rm $(docker ps -a -q) && docker rmi $(docker images -q)
Docker Swarm
Initialize swarm and deploy stack
docker swarm init --advertise-addr <address>
docker stack deploy -c docker-compose.yml my-app
Sample YML for composing stack
version: '3.5'
services:
db:
image: zhixu/mysql-db:latest
restart: always
container_name: mysql_db
web:
image: zhixu/glassfish-app:latest
container_name: glassfish_app
depends_on:
- "db"
ports:
- "8080:8080"
A note regarding Glassfish JDBC connection with database and Glassfish server in different containers–the service name determines the JDBC connection URL. For example, in line with the example above–the JDBC URL becomes jdbc:mysql://db:3306/<database name> The port is 3306 by default.
You can remove the stack and leave the swarm with the following commands.
docker stack rm my-app
docker swarm leave --force
Viewing Logs
docker logs --follow <container ID>
Running Bash in Container
docker exec -it <container ID> bash -l