Update Base to Alpine 3.8

Dockerfile

@@ -1,30 +1,37 @@
-FROM sillelien/base-alpine:0.10
+FROM alpine:3.8
 LABEL maintainer="Zhuohuan LI <zixia@zixia.net>"
 
-ENV BATS_VERSION 0.4.0
+ENV BATS_VERSION 1.1.0
+ENV S6_VERSION 1.21.7.0
 
 ## Install System
 
 RUN apk add --update --no-cache \
         bash \
         curl \
+        cyrus-sasl \
         drill \
         logrotate \
         openssl \
         postfix \
-        cyrus-sasl \
+        syslog-ng \
     \
     && curl -s -o "/tmp/v${BATS_VERSION}.tar.gz" -L \
-        "https://github.com/sstephenson/bats/archive/v${BATS_VERSION}.tar.gz" \
+        "https://github.com/bats-core/bats-core/archive/v${BATS_VERSION}.tar.gz" \
     && tar -xzf "/tmp/v${BATS_VERSION}.tar.gz" -C /tmp/ \
-    && bash "/tmp/bats-${BATS_VERSION}/install.sh" /usr/local \
+    && bash "/tmp/bats-core-${BATS_VERSION}/install.sh" /usr/local \
     \
     && rm -rf /tmp/*
 
+## Install s6 process manager
+RUN curl -L -s https://github.com/just-containers/s6-overlay/releases/download/v${S6_VERSION}/s6-overlay-amd64.tar.gz \
+  | tar xzf - -C /
+
 ## Configure Service
 
 COPY install/main.dist.cf /etc/postfix/main.cf
 COPY install/master.dist.cf /etc/postfix/master.cf
+COPY install/syslog-ng.conf /etc/syslog-ng/syslog-ng.conf
 
 RUN cat /dev/null > /etc/postfix/aliases && newaliases \
     && echo simple-mail-forwarder.com > /etc/hostname \
@@ -43,6 +50,9 @@ RUN bash -n /app/init-openssl.sh && chmod +x /app/init-openssl.sh
 COPY install/postfix.sh /etc/services.d/postfix/run
 RUN bash -n /etc/services.d/postfix/run && chmod +x /etc/services.d/postfix/run
 
+COPY install/syslog-ng.sh /etc/services.d/syslog-ng/run
+RUN bash -n /etc/services.d/syslog-ng/run && chmod +x /etc/services.d/syslog-ng/run
+
 COPY entrypoint.sh /entrypoint.sh
 RUN bash -n /entrypoint.sh && chmod a+x /entrypoint.sh
 

install/postfix.sh

@@ -13,8 +13,6 @@ daemon_directory=`$command_directory/postconf -h daemon_directory`
 $daemon_directory/master -t || $command_directory/postfix stop
 
 # make consistency check
-chown root /var/spool/postfix
-chown root /var/spool/postfix/pid
 $command_directory/postfix check >/dev/console 2>&1
 
 # run Postfix

install/syslog-ng.conf

@@ -0,0 +1,43 @@
+@version: 3.9
+
+# Options
+options {
+  # Disable statistic log messages.
+  stats_freq(0);
+};
+
+# Sources
+source s_dgram {
+  unix-dgram("/dev/log");
+  internal();
+};
+
+# Filters
+filter f_out {
+  level(info..warn);
+};
+filter f_err {
+  level(err..emerg,debug);
+};
+
+# Destinations
+destination d_stdout {
+  pipe("/dev/stdout");
+};
+
+destination d_stderr {
+  pipe("/dev/stderr");
+};
+
+# Logs
+log {
+  source(s_dgram);
+  filter(f_out);
+  destination(d_stdout);
+};
+
+log {
+  source(s_dgram);
+  filter(f_err);
+  destination(d_stderr);
+};

install/syslog-ng.sh

@@ -0,0 +1,3 @@
+#!/bin/execlineb -P
+
+/usr/sbin/syslog-ng --cfgfile=/etc/syslog-ng/syslog-ng.conf -F