Docker Tutorial For Beginners

Docker Tutorial for Beginners – Docker Hub is a service for finding and sharing container images with your team, provided by Docker. Here are some steps for docker beginers.

Step 1: Sign up for Docker Hub

To sign up start by creating an account.

Step 2: Create your first repository

To create a repository:

1. Sign in to the Docker Hub
2. On the Docker Hub welcome page, Click on Create Repository:
3. 
4. Name the repository ** /my-first-repo** as shown in below figure. Select **Private** option:
5. 
6. You’ve created your first repository. You should see:

Step 3: Download and install Docker Desktop

To build and push a container image to Docker Hub we’ll need to download Docker Desktop.

1. Download and install the Docker Desktop. If you are on Linux, download Docker Engine – Community
2. Open the terminal and sign in to Docker Hub on your computer by running docker login commond.

Step 4: Build and push a container image to Docker Hub from your computer

Now start by creating a Dockerfile to specify your application as shown below.

   cat > Dockerfile <<EOF
   FROM busybox
   CMD echo "Hello world! This is my first Docker image."
   EOF

1. To build your Docker image, run docker build -t <your_username>/my-first-repo. 
2. To test your docker image localy, run docker run <your_username>/my-first-repo.
3. To push your Docker image to Docker Hub, run docker push <your_username>/my-first-repo.

You should see output similar to the below figure:

And in Docker Hub, now your repository should have a new latest tag available under Tags:

You’ve successfully:

• Signed up for Docker Hub
• Created your first repository
• Built a Docker container image on your computer
• Pushed it to Docker Hub

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