Introduction
In this lab, we will embark on a journey to the ancient kingdom of Dockeria where the mighty dragon, Dockeron, roams freely. Our goal is to master the art of starting and managing Docker containers to fulfill the ancient prophecy and earn the respect of Dockeron.
Prepare the Docker Environment
In this step, we will prepare our Docker environment by ensuring that Docker is installed and running. Additionally, we will pull the hello-world Docker image and run a container based on this image.
Task 1: Install Docker
First, let's ensure that Docker is installed. If it's not installed, please install Docker for your specific operating system following the official documentation.
Task 2: Start Docker Service
Ensure that the Docker service is up and running by executing the following command in the terminal:
sudo systemctl start docker
Task 3: Pull and Run hello-world Image
Pull the hello-world Docker image by running the following command:
docker pull hello-world
Next, run a container based on the hello-world image using the following command:
docker run hello-world
Launch a Customized Container
In this step, we will create a Dockerfile to build a custom Docker image and run a container based on it.
Task 1: Create a Dockerfile
Create a file named Dockerfile under the /home/labex/project directory with the following contents:
FROM alpine
CMD echo "Welcome to Dockeria, the land of dragons!"
Task 2: Build and Run the Custom Image
Build the custom Docker image using the following command:
$ cd /home/labex/project
$ docker build -t dockeria-image .
Finally, run a container based on the newly built image:
$ cd /home/labex/project
$ docker run dockeria-image
Summary
In this lab, we ventured into the kingdom of Dockeria and harnessed the power of Docker containers. By completing the tasks, we have acquired the essential skills to start and manage Docker containers. This knowledge will be invaluable as we continue our adventures in the realm of containerization.
🚀 Practice Now: Docker Start Container
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