FROM alpine:3.14.0 ARG POSTSRSD_PACKAGE_VERSION=1.11-r0 RUN adduser -S postsrsd \ && apk add --no-cache postsrsd=$POSTSRSD_PACKAGE_VERSION \ && mkdir -p /etc/postsrsd/secrets \ && chown postsrsd /etc/postsrsd/secrets USER postsrsd VOLUME /etc/postsrsd/secrets # https://github.com/roehling/postsrsd/blob/1.6/postsrsd.c#L342 ENV SRS_DOMAIN change-me.tld ENV SRS_SECRET /etc/postsrsd/secrets/list # forward SRS lookup EXPOSE 10001/tcp # reverse SRS lookup EXPOSE 10002/tcp # > Cannot open file with secret: /etc/postsrsd/secrets/list CMD set -x; \ if [ ! -f "$SRS_SECRET" ]; \ then tr -dc '1-9a-zA-Z' < /dev/random | head -c 32 > "$SRS_SECRET"; \ fi \ && postsrsd -l0.0.0.0 -e