Docker - Popular Docker commands

docker.txt

# Show running containers
docker container ls

# Show all containers
docker container ls -a

# Create container from image
# -d run as daemon in background
# -p say what port to map in container
# --name give container a name
# no host port specified here so maps random port between 32768 and 61000 on host to port 8080 in container
docker run -it --name <container_name> <image_name>
sudo docker run -d -p <port> --name <container_name> <image_name>
sudo docker run -d -p 8080 --name nodeapp rajohns/nodeapp

# Map specific host port to specific container port
# Example maps 32768 on host to 8080 in container
sudo docker run -d -p <host_port>:<container_port> --name <container_name> <image_name>
sudo docker run -d -p 32768:8080 --name nodeapp rajohns/nodeapp

# Build image from Dockerfile
# Don't forget . at end of command
# Should be run inside directory that contains Dockerfile
sudo docker build -t <desired_image_name> .
sudo docker build -t rajohns/nodeapp .

# Always restart container
# Doesn't restart container if container was manually stopped (with docker kill for example)
# Restarts if Host OS restarts for example
sudo docker run --restart=always --name <container_name> -d <image_name>
sudo docker run --restart=always --name nodeapp -d rajohns/nodeapp

# Get information about container
sudo docker inspect <container_name>
sudo docker inspect daemon_dave

# Start a stopped container
docker start -i <container_name>

# Delete/Remove container
docker container rm <container_name>

# Stop a container
docker container stop <container_name>

# View container logs
docker container logs <container_name>

# Attach to an already running background container
docker container exec -it <container_name> bash