Start Hello World Container

docker run hello-world

List of Containers:

docker ps

docker ps -a

• docker: This is the command-line interface (CLI) for interacting with the Docker engine.
• ps: This is the Docker command for listing containers.
• a: This is an optional flag that tells Docker to show all containers, including those that are not currently running.

List of Images:

docker images

Search Images From Docker Hub:

docker search  apache 

Pull Docker Image

# apache image - latest by default
docker pull httpd 

# apache image - latest specified
docker pull httpd:latest 

#apache image - 2.9v
docker pull httpd:2.9 

Start Docker Container

# check container id using "docker ps -a"
docker start container-id 

Stop Docker Container

# check container id using "docker ps -a"
docker stop container-id 

Run Docker Container

# run container in terminal
- docker run redis 

# -d detached is used to run container in background of terminal
- docker run -d redis 

# -d detached is used to run container in background of terminal
- docker run -d redis 

# --name is used to specify a name for container
- docker run -d --name mywebapp redis 

# -p is port, 7000 is host port, 6379 is container port. Host port cant be same for multiple containers
- docker run -p7000:6379 -d redis 

• docker run is used to create a new container from an image, while docker start is used to start an existing container that has been stopped or paused.

Remove Docker Image

docker rm image-name 

# -f is used to forcefully delete image if its container is running
docker rm -f image-name 

Remove Docker Container

docker rm container-id 

# -f is used to forcefully delete image if its container is running
docker rm -f container-id 

Check Docker Logs

- docker logs container-id
- docker logs container-name

Connect with Container

- docker exec -it container-id/container-name /bin/bash

• In the docker exec command, the -it option is used to create an interactive terminal session inside a running container.
• Bash is a powerful command-line interface that allows you to interact with the operating system and execute various commands and scripts. When you start a new instance of Bash within a container, you can use it to navigate the container's file system, install software, edit files, and perform other system-level tasks.
• use “exit” to get out of container.

Command Manual:

write man before any command to check possible flags that can be used with it.

eg. man docker-images