5 Docker Commands for you to get started!
Hello there,
Hope you are doing good.
This week I want to introduce you to Docker and 5 commands you must know to started.
What is Docker?
Docker is a Container Runtime. It helps you build and run Containers based on the custom Image you build.
When you use Docker as a Runtime to build and run your Containers, those containers are called Docker Containers.
You can build, run and manage containers in Docker via Docker Commands.
Here are the top 5 commands you must know to get started
- docker build
- docker run / stop
- docker ps
- docker exec
- docker pull / push
Docker Build
builds a Docker image from a Dockerfile.
It reads the instructions in the Dockerfile and creates an image based on those instructions.
The resulting image can be used to run container instances.
docker build -t <tag_name> <path_to_dockerfile>
Docker Run
creates and runs a container from a Docker image.
It starts a new container instance based on the specified image, allowing the application within the container to run independently.
You specify the Host Port and Container Port mapping using the -p flag.
docker run -p host_port:container_port <tag_name>
Docker ps
Displays all the available containers that are currently running.
Adding -a flag shows all the stopped containers as well.
docker ps
Docker Exec
Executes a command within a running container.
The -it flag allows interactive access to the container, enabling input and output with the container’s command line.
docker exec -it <container_name> <command_to_run>
Docker Stop
Stops a running docker container.
docker stop <container_name>
Docker Pull / Push
Docker pull Downloads Docker images from a registry.
It retrieves the specified image or the latest version if not specified, making it available locally for running containers without needing to build the image locally.
docker pull <image_name>
Docker push uploads Docker images to a registry.
It pushes the specified image or tagged version to the designated registry, making it available for others to download and use.
docker push <image_name>
I hope you found the content useful and informative.
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Ram
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