docker-compose.yml

version: '2.3'

volumes:
  config:

services:
  homeassistant:
    build: .
    image: fphammerle/home-assistant
    #read_only: true
    volumes:
    - type: volume
      source: config
      target: /config
      read_only: false
    - type: tmpfs
      # workaround for async_dns<1.1.10:
      # >   File "/usr/local/lib/python3.8/site-packages/async_dns/core/config/root.py", line 16, in <module>
      # >     os.makedirs(CONFIG_DIR, exist_ok=True)
      # >   File "/usr/local/lib/python3.8/os.py", line 223, in makedirs
      # >     mkdir(name, mode)
      # > PermissionError: [Errno 13] Permission denied: '/home/hass/.config/async_dns'
      # introduced in https://github.com/gera2ld/async_dns/commit/16cf6361ebfcc62fc6339e5194d013e8a8607fa2
      # injected into home-assistant image >=2021.4.0 via
      # - https://github.com/bdraco/aiodiscover/commit/d1db9a79df7c56b7930f04a79a36c2360ce8cd18#diff-610f365ee23052059bddd764ee702dce7e295c7b6563f1fd8980c8995205e079R6
      # - https://github.com/home-assistant/core/commit/2ff94c8ed9fecd4dd7984d1f2d2600289c983a8b#diff-e441c4ef86b6cbecc1fe68515ed64a515941c872a72b40e85efbefc66ecb41b4R3
      # fix: https://github.com/gera2ld/async_dns/pull/23/files
      # https://github.com/gera2ld/async_dns/pull/23/commits/2e2bfd2a6428997191dce16d99d5a6d7ab70acd1
      # related issue: https://github.com/home-assistant/core/issues/49205
      target: /home/hass/.config/async_dns
      tmpfs:
        mode: 1777
        size: 4k
    ports: ['127.0.0.1:8123:8123']
    cap_drop: [ALL]
    security_opt: [no-new-privileges]
    # docker-compose >=2.2,<3
    cpus: 2
    mem_limit: 512M
    restart: on-failure

# https://docs.docker.com/compose/compose-file/compose-file-v2/