This Dockerfile is using Debian 11 and the latest version of dnscrypt-proxy. Provided configuration is listening on all ports.
Build the image:
docker build -t dnscrypt-proxy .
Start the container:
docker run -d -p 0.0.0.0:50053:53/udp --name dnscrypt-proxy dnscrypt-proxy
The Dockerfile in this project is based on dnscryptio/dnscrypt-proxy-docker, which in turn is based on dnscrypt-server-docker by Frank Denis.