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
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
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
Docker Stop
Stops a running docker container.
docker stop
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
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
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