How do I set up Docker layer caching in CircleCI?

How do I set up Docker layer caching in CircleCI?

To set up Docker layer caching in CircleCI, you need to enable the Docker layer caching feature in your CircleCI configuration.

What changes do I need to make in my config.yml file?

In your config.yml, add the docker executor and set docker_layer_caching: true under the setup section.

Can you give me an example of a config.yml with this setup?

Sure! Here's a simple example:

version: 2.1
executors:
  docker-executor:
    docker:
      - image: circleci/python:3.8
    docker_layer_caching: true
jobs:
  build:
    executor: docker-executor
    steps:
      - checkout
      - run: echo 'Building...'
workflows:
  version: 2
  build:
    jobs:
      - build