This is a very basic dnsmasq docker container that allows setting the dnsmasq configuration via environment variable.

It has a single tag: latest

If you need more granular control of the version you can use digest pinning. I.e. ghcr.io/acbgbca/dnsmasq:latest@sha256:260d0fb07d1c1e75e83218d24c4a2ebb8c87bde0a1d345bc5c91dbae1a6b3470

If you want a practicle use for this container, see https://github.com/acbgbca/k3s-sandbox

docker run ghcr.io/acbgbca/dnsmasq

or compose:

services:
  dnsmasq:
    image: ghcr.io/acbgbca/dnsmasq
    ports:
      - 1053:53/udp

With additional configuration: docker run -e DNSMASQ_CONF="address=/local/192.168.132.5" ghcr.io/acbgbca/dnsmasq

or compose:

services:
  dnsmasq:
    image: ghcr.io/acbgbca/dnsmasq
    environment:
      - DNSMASQ_CONF=address=/local/192.168.132.5
    ports:
      - 1053:53/udp

With multi-line compose configuration:

services:
  dnsmasq:
    image: ghcr.io/acbgbca/dnsmasq
    environment:
      - |
        DNSMASQ_CONF=
        address=/local/192.168.132.5
        address=/internal/192.168.132.6
        address=/homelab/192.168.132.7
    ports:
      - 1053:53/udp

To verify the configuration: docker run --rm -e DNSMASQ_CONF="address=/local/192.168.132.5" ghcr.io/acbgbca/dnsmasq --test

To run with additional logging: docker run --rm -e DNSMASQ_CONF="address=/local/192.168.132.5" ghcr.io/acbgbca/dnsmasq -k --log-facility=- -q

To run a DNS using the docker-compose in the dev container: nslookup -port=1053 blah.internal 127.0.0.1

Output:

Server:         127.0.0.1
Address:        127.0.0.1#1053

Name:   blah.internal
Address: 192.168.132.5