Backup tuto3

pkg/postfix/Dockerfile

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+FROM alpine:3.7
+MAINTAINER Pierre-Olivier Mercier <nemunaire@nemunai.re>
+
+RUN apk add --no-cache postfix
+
+EXPOSE 25
+
+CMD ["/usr/sbin/postfix", "-d"]
+
+LABEL org.mobyproject.config='{"binds": ["/etc/resolv.conf:/etc/resolv.conf"], "capabilities": ["CAP_NET_BIND_SERVICE"]}'

pkg/postfix/build.yml

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+image: postfix

pkg/postfix/docker-entrypoint.sh

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+#!/bin/sh
+
+set -e
+
+if [ `which unbound-$1 2>/dev/null` ]; then
+  set -- unbound-"$@"
+elif [ ! `which $1 2>/dev/null` ]; then
+  set -- unbound -dv "$@"
+fi
+
+unbound-anchor
+
+exec "$@"