How to build and push an image to a Docker repository?

The following steps are usually performed to build and push a Docker image to a repository:

1. Build the image: Use the docker build command, specifying the path to the Dockerfile and the image tag.

   docker build -t myrepo/myimage:tag .
   

2. Authenticate with the Docker registry: If the repository requires authentication, log in:

   docker login myrepo
   

3. Push the image: After successful build and login, push the image with:

   docker push myrepo/myimage:tag
   

Example of the complete process:

# Build
docker build -t myrepo/myimage:1.0 .

# Login to the repository
docker login myrepo

# Push
docker push myrepo/myimage:1.0

It is important that the image tag contains the name of the repository where you want to send the image.