refractor variable replacement

roundcube/Dockerfile

@@ -31,12 +31,16 @@ RUN rm -rf /var/log/* &&\
 
 COPY ./apache2.conf /etc/apache2/apache2.conf
 
-COPY ./run.sh /run.sh
-
-EXPOSE 80
-
 COPY ./roundcubemail-1.2.2/ /var/www/html/
 
 RUN ln -s /dev/stderr /var/www/html/logs/errors
 
+COPY ./vars-vars /etc/vars-vars
+
+COPY ./vars-files /etc/vars-files
+
+COPY ./run.sh /run.sh
+
+EXPOSE 80
+
 CMD ["/run.sh"]

roundcube/run.sh

@@ -1,25 +1,30 @@
-#!/bin/bash
+#! /usr/bin/env bash
+
+replace_var()
+{
+  file="${1}"
+  var="${2}"
+  sed -e "s?${var}?${!var}?g" -i "${file}"
+}
+
 replace_vars()
 {
   file="${1}"
-  sed -e "s/POSTGRES_HOST/${POSTGRES_HOST}/" -i "${file}"
-  sed -e "s/POSTGRES_USER/${POSTGRES_USER}/" -i "${file}"
-  sed -e "s/POSTGRES_PASSWORD/${POSTGRES_PASSWORD}/" -i "${file}"
-  sed -e "s/POSTGRES_DB/${POSTGRES_DB}/" -i "${file}"
-  sed -e "s/MAIL_USER_DB_HOST/${MAIL_USER_DB_HOST}/" -i "${file}"
-  sed -e "s/MAIL_USER_DB_USER/${MAIL_USER_DB_USER}/" -i "${file}"
-  sed -e "s/MAIL_USER_DB_PASSWORD/${MAIL_USER_DB_PASSWORD}/" -i "${file}"
-  sed -e "s/MAIL_USER_DB_DB/${MAIL_USER_DB_DB}/" -i "${file}"
-  sed -e "s/MAIL_USER_DB_PORT/${MAIL_USER_DB_PORT}/" -i "${file}"
-  sed -e "s!IMAP_HOST!${IMAP_HOST}!" -i "${file}"
-  sed -e "s!SMTP_HOST!${SMTP_HOST}!" -i "${file}"
-  sed -e "s/SIEVE_HOST/${SIEVE_HOST}/" -i "${file}"
-  sed -e "s/DES_KEY/${DES_KEY}/" -i "${file}"
+  for var in $(cat /etc/vars-vars)
+  do
+    replace_var "${file}" "${var}"
+  done
+}
+
+replace_files()
+{
+  for file in $(cat /etc/vars-files)
+  do
+    replace_vars "${file}"
+  done
 }
 
-replace_vars /var/www/html/config/config.inc.php
-replace_vars /var/www/html/plugins/password/config.inc.php
-replace_vars /var/www/html/plugins/vacation_sieve/config.inc.php
+replace_files
 
 rm -f /run/apache2/apache2.pid
 exec /usr/sbin/apache2ctl -D FOREGROUND

roundcube/vars-files

@@ -0,0 +1,3 @@
+/var/www/html/config/config.inc.php
+/var/www/html/plugins/password/config.inc.php
+/var/www/html/plugins/vacation_sieve/config.inc.php

roundcube/vars-vars

@@ -0,0 +1,18 @@
+POSTGRES_HOST
+POSTGRES_USER
+POSTGRES_PASSWORD
+POSTGRES_DB
+
+IMAP_HOST
+
+SMTP_HOST
+
+SIEVE_HOST
+
+MAIL_USER_DB_HOST
+MAIL_USER_DB_USER
+MAIL_USER_DB_PASSWORD
+MAIL_USER_DB_DB
+MAIL_USER_DB_PORT
+
+DES_KEY

update_vars.sh

@@ -0,0 +1,7 @@
+#! /usr/bin/env sh
+
+vars=$(cat env | cut -d= -f1)
+for docker in roundcube
+do
+  echo "${vars}" > "./${docker}/vars-vars"
+done