Support changing ifm configuration via docker env vars

.dockerignore

@@ -1,3 +1,3 @@
 *
 !ifm.php
-!apache2-foreground
+!docker-startup.sh

Dockerfile

@@ -1,6 +1,22 @@
 FROM alpine:3.5
 
 ENV PHP_INI_DIR /etc/php5
+# general settings
+ENV IFM_AUTH=0                                                  \
+    IFM_AUTH_SOURCE='inline;admin:$2y$10$0Bnm5L4wKFHRxJgNq.oZv.v7yXhkJZQvinJYR2p6X1zPvzyDRUVRC'                               \
+    IFM_ROOT_DIR=""                                             \
+    IFM_TMP_DIR=""                                              \
+    IFM_DEFAULTTIMEZONE="Europe/Berlin"
+# api controls
+ENV IFM_API_AJAXREQUEST=1 IFM_API_CHMOD=1 IFM_API_COPYMOVE=1    \
+    IFM_API_CREATEDIR=1 IFM_API_CREATEFILE=1 IFM_API_EDIT=1     \
+    IFM_API_DELETE=1 IFM_API_DOWNLOAD=1 IFM_API_EXTRACT=1       \
+    IFM_API_UPLOAD=1 IFM_API_REMOTEUPLOAD=1 IFM_API_RENAME=1    \
+	IFM_API_ZIPNLOAD=1
+# gui controls
+ENV IFM_GUI_SHOWLASTMODIFIED=0 IFM_GUI_SHOWFILESIZE=1 IFM_GUI_SHOWOWNER=1   \
+    IFM_GUI_SHOWGROUP=1 IFM_GUI_SHOWPERMISSIONS=2 IFM_GUI_SHOWHTDOCS=1      \
+    IFM_GUI_SHOWHIDDENFILES=1 IFM_GUI_SHOWPATH=0
 
 # ensure apache user exists with the desired uid
 RUN set -x \
@@ -76,13 +92,13 @@ RUN { \
         echo 'log_errors = On';                     \
         echo 'error_log = "/var/www/php.log"';      \
     } > $PHP_INI_DIR/conf.d/ZZ_ifm.ini 
-    
-COPY apache2-foreground /usr/local/bin/
+
+COPY docker-startup.sh /usr/local/bin/
 
 COPY ifm.php /var/www/html/index.php
 
 WORKDIR /var/www
 
 EXPOSE 80
-CMD ["apache2-foreground"]
+CMD ["docker-startup.sh"]
 

apache2-foreground

@@ -1,8 +0,0 @@
-#!/bin/sh
-set -e
-
-# Apache gets grumpy about PID files pre-existing
-rm -f /usr/local/apache2/logs/httpd.pid
-
-exec httpd -DFOREGROUND
-

docker-startup.sh

@@ -0,0 +1,59 @@
+#!/bin/sh
+set -e
+
+################################################################################
+# Adjust ifm configuration according to docker env vars.
+# Defaults should match those in ifm.php. See Dockerfile for details.
+
+# see http://stackoverflow.com/a/2705678/433558
+sed_escape_lhs() {
+    echo "$@" | sed 's/[]\/$*.^|[]/\\&/g'
+}
+sed_escape_rhs() {
+    echo "$@" | sed 's/[\/&]/\\&/g'
+}
+set_config() {
+    key=$(sed_escape_lhs "$1")
+    value=$(sed_escape_rhs "$2" )
+    sed -ri -e "s/\"$key\"[[:space:]]*=>.*$/\"$key\" => $value,/" /var/www/html/index.php
+}
+
+# general settings
+set_config "auth"               "$IFM_AUTH"
+set_config "auth_source"        "'$IFM_AUTH_SOURCE'"
+set_config "root_dir"           "'$IFM_ROOT_DIR'"
+set_config "tmp_dir"            "'$IFM_TMP_DIR'"
+set_config "defaulttimezone"    "'$IFM_DEFAULTTIMEZONE'"
+# api controls
+set_config "ajaxrequest"        "$IFM_API_AJAXREQUEST"
+set_config "chmod"              "$IFM_API_CHMOD"
+set_config "copymove"           "$IFM_API_COPYMOVE"
+set_config "createdir"          "$IFM_API_CREATEDIR"
+set_config "createfile"         "$IFM_API_CREATEFILE"
+set_config "edit"               "$IFM_API_EDIT"
+set_config "delete"             "$IFM_API_DELETE"
+set_config "download"           "$IFM_API_DOWNLOAD"
+set_config "extract"            "$IFM_API_EXTRACT"
+set_config "upload"             "$IFM_API_UPLOAD"
+set_config "remoteupload"       "$IFM_API_REMOTEUPLOAD"
+set_config "rename"             "$IFM_API_RENAME"
+set_config "zipnload"           "$IFM_API_ZIPNLOAD"
+# gui controls
+set_config "showlastmodified"   "$IFM_GUI_SHOWLASTMODIFIED"
+set_config "showfilesize"       "$IFM_GUI_SHOWFILESIZE"
+set_config "showowner"          "$IFM_GUI_SHOWOWNER"
+set_config "showgroup"          "$IFM_GUI_SHOWGROUP"
+set_config "showpermissions"    "$IFM_GUI_SHOWPERMISSIONS"
+set_config "showhtdocs"         "$IFM_GUI_SHOWHTDOCS"
+set_config "showhiddenfiles"    "$IFM_GUI_SHOWHIDDENFILES"
+set_config "showpath"           "$IFM_GUI_SHOWPATH"
+
+
+################################################################################
+
+# Apache gets grumpy about PID files pre-existing
+rm -f /usr/local/apache2/logs/httpd.pid
+
+# Start up apache
+exec httpd -DFOREGROUND
+