Ensure that various directories are writeable (#413)

* making sure that various directories are writeable, via the new function make_dir_writable()

* Move image permissions update code to run-all.sh

* Move image permissions update code to run-all.sh

* Move image permissions update code to update-images-permissions script

_sources/scripts/run-all.sh

@@ -78,6 +78,10 @@ check_mount_points
 sleep 1
 cd "$MW_HOME" || exit
 
+# Check and update permissions of wiki images in background.
+# It can take a long time and should not block Apache from starting.
+/update-images-permissions.sh &
+
 ########## Run maintenance scripts ##########
 echo "Checking for LocalSettings..."
 if [ -e "$MW_VOLUME/config/LocalSettings.php" ] || [ -e "$MW_VOLUME/config/CommonSettings.php" ]; then
@@ -103,6 +107,9 @@ else
   chmod -R g=rwX $MW_VOLUME/sitemap
 fi
 
+echo "Checking permissions of MediaWiki volume dir $MW_VOLUME except $MW_VOLUME/images..."
+make_dir_writable "$MW_VOLUME" -not '(' -path "$MW_VOLUME/images" -prune ')'
+
 # Running php-fpm
 /run-php-fpm.sh &
 

_sources/scripts/update-images-permissions.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+sleep 0.01
+printf "\n\n===== update-images-permissions.sh =====\n\n\n"
+
+set -x
+
+. /functions.sh
+
+echo "Checking permissions of images in MediaWiki volume dir $MW_VOLUME/images..."
+make_dir_writable "$MW_VOLUME/images"