docker-compose.yml

version: "3"

services:
  app:
    build:
      context: .
      dockerfile: Dockerfile
    volumes:
      - .:/go/src/github.com/m3db/m3
      - /usr/bin/buildkite-agent:/usr/bin/buildkite-agent
      # Support running docker within docker. That is, buildkite jobs themselves run in a container; that container
      # needs to be able to spin up functioning docker containers.
      - /var/run/docker.sock:/var/run/docker.sock
    extra_hosts:
      # Allow routing from the buildkite container to the host machine, as host.docker.internal. This allows us to do
      # the following:
      #  - Spin up an etcd container with ports published to the host machine
      #  - Connect to the etcd container from the buildkite test process using host.docker.internal
      # See
      # https://medium.com/@TimvanBaarsen/how-to-connect-to-the-docker-host-from-inside-a-docker-container-112b4c71bc66
      - "host.docker.internal:host-gateway"
    environment:
      - CI
      - BUILDKITE
      - BUILDKITE_AGENT_ACCESS_TOKEN
      - BUILDKITE_JOB_ID
      - BUILDKITE_BUILD_ID
      - BUILDKITE_BUILD_NUMBER
      - BUILDKITE_BRANCH
      - BUILDKITE_BUILD_URL
      - BUILDKITE_PROJECT_SLUG
      - BUILDKITE_COMMIT
      - BUILDKITE_PULL_REQUEST
      - BUILDKITE_TAG
      - BUILDKITE_PARALLEL_JOB=4
      - BUILDKITE_PARALLEL_JOB_COUNT=4
      - CODECOV_TOKEN
      - SPLIT_IDX
      - TOTAL_SPLITS
      - GOPATH=/go