Spotter-VM/postfix/Dockerfile

22 lines
762 B
Docker

FROM alpine:3.7
MAINTAINER Disassembler <disassembler@dasm.cz>
RUN \
# Create OS user (which will be picked up later by apk add)
addgroup -S -g 587 postfix \
&& adduser -S -u 587 -h /var/spool/postfix -s /bin/false -g postfix -G postfix postfix \
# Install Postfix
&& apk --no-cache add ca-certificates postfix s6 \
# Build aliases database
&& newaliases \
# Cleanup
&& sed -ir '/^(#.*)?$/d' /etc/postfix/aliases \
&& rm -r /etc/postfix/access /etc/postfix/canonical /etc/postfix/dynamicmaps.cf* /etc/postfix/generic /etc/postfix/header_checks /etc/postfix/postfix-files.d /etc/postfix/relocated /etc/postfix/transport /etc/postfix/virtual
COPY docker/ /
VOLUME ["/etc/postfix", "/var/spool/postfix"]
EXPOSE 25
CMD ["s6-svscan", "/etc/services.d"]