🐳Docker
Docker is a platform that allows you to rapidly build, test, and deploy applications, and scale them into any environment with confidence in your code's performance.
Docker revolutionises application development by packaging apps into containers, ensuring consistent performance across different environments. This guide'll explore essential Docker commands for efficient container and image management.
✅Task:
1️⃣Use the
docker runcommand to start a new container and interact with it through the command line.Running the hello-world image executes a command that confirms Docker is working correctly.
docker run hello-world
2️⃣Use the
docker inspectcommand to view detailed information about a container or image.View Detailed Information About a Container or Image
docker inspect hello-world
3️⃣Use the
docker portcommand to list the port mappings for a container.This command maps port8282 on the host to port82 in the container and lists the port mappings.
docker run -d -p 8282:82 --name my_container3 nginx docker port my_container3
4️⃣Use the
docker statscommand to view resource usage statistics for one or more containers.This command provides a live stream of resource usage statistics for all running containers.
docker stats
5️⃣Use the
docker topcommand to view the processes running inside a container.This command lists the processes running inside the my_container3 container.
docker top my_container3
6️⃣Use the
docker savecommand to save an image to a tar archive.This command saves the nginx image to a tar archive named my_image.tar.
docker save -o my_image.tar nginx
7️⃣Use the
docker loadcommand to load an image from a tar archive.This command loads the image from the my_image.tar archive into Docker.
docker load -i my_image.tar
🎯Conclusion
Mastering these Docker commands will provide a solid foundation to manage your environment, from small web apps to complex microservices.