Dockerfile

FROM docker.io/library/golang:1.18.3-alpine

ARG VERSION=master

RUN true \
    && apk add --no-cache --virtual .build-utils git make \
    && git clone https://git.shivering-isles.com/github-mirror/m13253/dns-over-https.git --depth 1 -b "$VERSION" \
    && cd dns-over-https \
    && make \
    && make install \
    && rm -rf /go/dns-over-https/doh-server \
    && apk del .build-utils \
    && adduser -h /etc/dns-over-https -S doh \
    && chown -R doh /etc/dns-over-https \
    && chmod -R 0700 /etc/dns-over-https \
    && true

COPY ./entrypoint.sh /usr/local/bin/entrypoint

USER doh

ENTRYPOINT ["entrypoint"]

ENV DOH_HEALTHCHECK_DOMAIN="ci-test.dns.shivering-isles.com"

HEALTHCHECK CMD curl "http://localhost:8053/dns-query?name=${DOH_HEALTHCHECK_DOMAIN}&type=A" | grep "127.0.0.123"

EXPOSE 8053

CMD ["doh-server", "-conf", "/etc/dns-over-https/doh-server.conf"]