Circle CI 2.0 Config Annotated

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Configuring CircleCI Migrating from 1.0 to 2.0 tips for migration

config.yml

version: 2    # Indicates what version of CircleCI to use
jobs:         # A collection of steps. Each job must declare an executor (Docker, Machine, or macos)
  <job_name>:      #  Nesting for each build job, if only one, must be "build", otherwise can be named uniquely.
      parallelism: 1                             # Number of threads to start running steps for the job in parallel
      docker / machine / macos                   # executor, or the place where steps occur (WE USE DOCKER)
        
      
      
      
      environment:                               # Environment variables to be used
        EXAMPLE_ENV_NAME: example_value         
      working_directory: ~/project               # The location steps will be run in. 
      shell:                                     # 
      branches
      resource_class
      steps
          run
          Default shell options
          Background commands
          Shorthand syntax
          The when Attribute
          Example
          checkout
          setup_remote_docker
          save_cache
              Example
          restore_cache
              Example
          deploy
              Example
          store_artifacts
              Example
          store_test_results
              Example
          persist_to_workspace
          Example for root Key
              Example for paths Key
          attach_workspace
              Example
          add_ssh_keys