Dockerfile

FROM library/alpine:3.13

# Credit: @frol for python3 - https://github.com/frol/docker-alpine-python3/blob/master/Dockerfile

# deps - python3 openssl curl sed grep mktemp
# boto3 - AWS SDK for python
RUN apk add --no-cache --virtual .build-deps git build-base libffi-dev openssl-dev cargo \
    && apk add --no-cache --virtual .dehydrated-rundeps python3-dev py-pip bash openssl curl \
    && pip3 install --upgrade pip boto3 dns-lexicon dns-lexicon[route53] dns-lexicon[transip] \
    && rm -r /root/.cache \

    && cd /tmp \
    && git clone https://github.com/lukas2511/dehydrated.git \
    && cd dehydrated \
    && git checkout tags/v0.6.5 \
    && cd .. \
    && chmod a+x dehydrated/dehydrated \
    && mv dehydrated/dehydrated /usr/bin/ \
    && git clone https://github.com/AnalogJ/lexicon.git \
    && cd lexicon \
    && git checkout tags/v3.3.17 \
    && cd .. \
    && rm -rf /tmp/* \
    && apk del .build-deps

COPY config /etc/dehydrated/config
COPY dehydrated-dns.sh /usr/bin/dehydrated-dns

COPY docker-entrypoint.sh /
ENTRYPOINT ["/docker-entrypoint.sh"]

HEALTHCHECK --interval=5s --timeout=3s \
    CMD ps aux | grep '[d]ehydrated' || exit 1

CMD ["dehydrated","-h"]