diff --git a/.gitignore b/.gitignore
index 763b166..54eebb9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,11 @@
 # dotenv environment variables file
-construye.sh
 .env*
 *.env
 
+# dev tools
+construye.sh
+docker-compose-dev.yml
+
 # Temporary folders
 tmp/
 temp/
diff --git a/Dockerfile b/Dockerfile
index af6b012..c743b02 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,22 +9,25 @@ ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update && apt-get -y dist-upgrade && apt-get -y install mysql-client pwgen python-setuptools curl git unzip apache2 php php-gd libapache2-mod-php postfix wget supervisor php-pgsql curl libcurl4 libcurl3-dev php-curl php-xmlrpc php-intl php-mysql git-core php-xml php-mbstring php-zip php-soap cron php-ldap vim locales
 
 #
-RUN cd /tmp && git clone -b MOODLE_39_STABLE git://git.moodle.org/moodle.git --depth=1 && \
+
+RUN cd /tmp && git clone -b MOODLE_37_STABLE git://git.moodle.org/moodle.git --depth=1 && \
 	mv /tmp/moodle/* /var/www/html/ && rm -rf /var/www/html/index.html && \
-	chown -R www-data:www-data /var/www/html 
+	chown -R root:www-data /var/www/html && \
+    find /var/www/html -type d -exec chmod 750 {} \;  && \
+    find /var/www/html -type f -exec chmod 640 {} \; 
+
 	
 #
 COPY files/foreground.sh /etc/foreground.sh
 #
 COPY files/moodle-php.ini /etc/php/7.2/apache2/conf.d/moodle-php.ini
-COPY files/apache-moodle.conf /etc/apache2/conf-available/apache-moodle.conf
+COPY files/apache-moodle.conf /etc/apache2/conf-enabled/apache-moodle.conf
 COPY files/moodlecron /etc/cron.d/moodlecron
 
 #
 RUN chmod 0644 /etc/cron.d/moodlecron ; \
-	chmod +x /etc/foreground.sh ; \
+    chmod +x /etc/foreground.sh ; \
     cd /var/log/apache2/ ; for i in *log; do rm $i; ln -s /dev/stdout $i;done ; \
-    a2enconf apache-moodle ; \ 
     echo "TLS_REQCERT never" >> /etc/ldap/ldap.conf
 
 # Cleanup, this is ran to reduce the resulting size of the image.
@@ -34,4 +37,6 @@ RUN apt-get clean autoclean && apt-get autoremove -y && rm -rf /var/lib/apt/list
 VOLUME ["/var/moodledata","/var/www/html/theme","/var/www/html/mod"]
 EXPOSE 80 443
 
+ENV MOODLE_VER=3.7
+
 ENTRYPOINT ["/etc/foreground.sh"]
diff --git a/README.md b/README.md
index 2ef5cb3..0796177 100644
--- a/README.md
+++ b/README.md
@@ -6,11 +6,17 @@ Moodle is a very popular open source learning management solution (LMS) for the
 
 Site: https://moodle.org/
 
+## Version/TAG: 
+* 3.7 (3.7_STABLE 3.7.9 build 20220216) 
+* 3.8 (3.8_STABLE 3.8.9 build 20220216) 
+* 3.9 (3.9_STABLE 3.9.12 build 20220216)
+
 ## Features
-* All configurations can be added from environment variables
-* Moodle security recommendations for apache and php
-* Check/move admin directory
-* Version: 3.7 (STABLE) / 3.8 (STABLE) / 3.9 (STABLE)
+- [x] All configurations can be added from environment variables to config.php
+- [x] Moodle security recommendations for apache and php
+- [x] Check/move admin directory
+- [x] Timezone and Language setting from enviroment 
+- [x] Proxy support and URL setting from enviroment 
 
 ### Config values
 All environment variables starting MOODLE_ will be transformed to $CFG and added automatically to the config.php file. Double _ separates array. Example:
@@ -25,6 +31,20 @@ All environment variables starting MOODLE_ will be transformed to $CFG and added
 ### Check/move admin directory
 If you define MOODLE_admin ($CFG->admin) rename admin directory to MOODLE_admin
 
+In certain circumstances you will want to move the management directory (/admin) to another location (for security or compatibility reasons)
+For this you only have to define the environment variable MOODLE_admin with the name with which you want it to be renaming the directory "admin"
+
+### URL 
+The VIRTUAL_HOST and VIRTUAL_PORT variables are used with double functionality.
+
+On the one hand they can be used for the docker with reverse proxy, but they are also used to generate the variable MOODLE_wwwroot ($CFG->wwwroot) together with the environment variable VIRTUAL_URL
+
+MOODLE_wwwroot = $proto://$VIRTUAL_HOST:$VIRTUAL_PORT$VIRTUAL_URL
+
+If the variable MOODLE_sslproxy is defined, $proto is https, else http
+In this way, you can use VIRTUAL_URL to publish moodle in any URL, something very useful when you are behind a reverse proxy
+
+
 ## Deploy
 
 ### Docker Composer
@@ -33,8 +53,8 @@ If you define MOODLE_admin ($CFG->admin) rename admin directory to MOODLE_admin
   $ git clone https://github.com/pvrmza/docker-moodle.git 
   $ cd docker-moodle
   $ cp env_mysql_example .env_mysql
-  $ cp env_moodle_example .env_observium
-  $ docker-compose up
+  $ cp env_moodle_example .env_moodle
+  $ docker-compose up -d
 ```
 
 # Volumen
diff --git a/docker-compose.yml b/docker-compose.yml
index fff3749..23a2a31 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -17,8 +17,7 @@ services:
       - db
     links:
       - db:db
-    #image: docker-moodle:200711-1840
-    image: pvrmza/docker-moodle
+    image: pvrmza/docker-moodle:3.9
     restart: always
     env_file:
       - .env_moodle
diff --git a/env_moodle_example b/env_moodle_example
index eda08f8..835b5c8 100644
--- a/env_moodle_example
+++ b/env_moodle_example
@@ -1,31 +1,44 @@
+
+# date time & languages
 TZ=America/Argentina/Mendoza
-VIRTUAL_HOST=moodle.local
-VIRTUAL_PORT=80
+MOODLE_lang=es
 
-MOODLE_wwwroot=http://localhost:8011
+#### nging proxy reverse and SSL
+VIRTUAL_HOST=localhost
+VIRTUAL_PORT=8011
+VIRTUAL_URL=/moodle
 
-MOODLE_dbtype=mysqli
-MOODLE_dblibrary=native
+# If the docker is behind a reverse proxy
+# MOODLE_reverseproxy=true
 
+# If the reverse proxy is SSL
+# MOODLE_sslproxy=true
+
+# This is generated when starting the container with the previous variables
+# MOODLE_wwwroot=http://$VIRTUAL_HOST:$VIRTUAL_PORT$VIRTUAL_URL
+
+
+# DB Connect
+MOODLE_dbtype=mysqli
 MOODLE_dbhost=db
 MOODLE_dbname=moodle
 MOODLE_dbuser=moodle
 MOODLE_dbpass=moodlepwd@
-MOODLE_prefix=mdl_
 
+# DB Options
+MOODLE_prefix=mdl_
+MOODLE_dblibrary=native
 MOODLE_dboptions__dbpersist=false
 MOODLE_dboptions__dbsocket=false
 MOODLE_dboptions__dbport=3306
 MOODLE_dboptions__dbhandlesoptions=false
 MOODLE_dboptions__dbcollation=utf8mb4_unicode_ci
 
-
+# Directory and permission
 MOODLE_dataroot=/var/moodledata
 MOODLE_directorypermissions=02777
 MOODLE_admin=admin
-MOODLE_lang=es
-
-#MOODLE_reverseproxy=true
-#MOODLE_sslproxy=true
 
+# log username in access_log
 MOODLE_apacheloguser=2
+
diff --git a/files/apache-moodle.conf b/files/apache-moodle.conf
index 64d7196..a8bbdc3 100644
--- a/files/apache-moodle.conf
+++ b/files/apache-moodle.conf
@@ -1,5 +1,3 @@
-Alias /moodle /var/www/html
-
 ServerSignature Off 
 ServerTokens Prod
 TraceEnable off
@@ -9,4 +7,4 @@ TraceEnable off
     Options -Indexes -FollowSymLinks
     AllowOverride None
     Require all granted
-</Directory>
\ No newline at end of file
+</Directory>
diff --git a/files/foreground.sh b/files/foreground.sh
index 121965d..f3206bd 100644
--- a/files/foreground.sh
+++ b/files/foreground.sh
@@ -10,28 +10,58 @@ touch /etc/crontab  /etc/cron.d/php /etc/cron.d/moodlecron
 
 #######
 # timezone
-echo $TZ > /etc/timezone && rm /etc/localtime && \
-ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && \
-dpkg-reconfigure -f noninteractive tzdata 
+if test -v TZ && [ `readlink /etc/localtime` != "/usr/share/zoneinfo/$TZ" ]; then
+  if [ -f /usr/share/zoneinfo/$TZ ]; then
+    echo $TZ > /etc/timezone 
+    rm /etc/localtime 
+    ln -snf /usr/share/zoneinfo/$TZ /etc/localtime 
+    dpkg-reconfigure -f noninteractive tzdata 
 
+    echo "date.timezone=$TZ" > /etc/php/7.2/apache2/conf.d/99_datatime.ini 
+  fi
+fi
 #######
-# permission check
-echo "placeholder" > /var/moodledata/placeholder
-chown -R www-data:www-data /var/moodledata
-find /var/moodledata -type d -exec chmod 700 {} \; 
-find /var/moodledata -type f -exec chmod 600 {} \; 
+# LANG
+if test -v MOODLE_lang; then
+  if ! test -d /var/www/html/lang/$MOODLE_lang && ! test -d $MOODLE_dataroot/lang/$MOODLE_lang; then
+    mkdir -p $MOODLE_dataroot/lang && cd $MOODLE_dataroot/lang/
+    wget https://download.moodle.org/download.php/direct/langpack/$MOODLE_VER/$MOODLE_lang.zip -q -O /tmp/temp.zip && unzip /tmp/temp.zip && rm -rf /tmp/temp.zip    
+  fi
+  # check lang package 
+  if [ `dpkg-query -l language-pack-$MOODLE_lang 2>/dev/null | egrep ^ii >/dev/null; echo $?` -eq 1 ]; then
+    apt-get update 
+    apt-get -y install language-pack-$MOODLE_lang 
+    dpkg-reconfigure locales 
+  fi
+fi
+
+#######
+# Building URL
+if test -v VIRTUAL_URL; then
+  # Apache conf
+  echo -e "\nAlias $VIRTUAL_URL /var/www/html \n" > /etc/apache2/conf-enabled/apache-moodle-url.conf
+fi
+
+if test -v MOODLE_sslproxy; then
+  proto=https
+  export VIRTUAL_PORT=443
+  export MOODLE_reverseproxy=true
+else
+  proto=http
+fi
+
+if ! test -v MOODLE_wwwroot; then
+  export MOODLE_wwwroot=$proto://$VIRTUAL_HOST:$VIRTUAL_PORT$VIRTUAL_URL
+fi
 
-chown -R root:www-data /var/www/html
-find /var/www/html -type d -exec chmod 750 {} \; 
-find /var/www/html -type f -exec chmod 640 {} \; 
 
 #######
 # check/move admin dir
 if test -v MOODLE_admin; then
-  mv /var/www/html/admin /var/www/html/$MOODLE_admin
+  admin_dir=$(find /var/www/html/ -iname admin_settings_search_form.php | xargs dirname)
+  mv $admin_dir /var/www/html/$MOODLE_admin 2>/dev/null
 fi
 
-
 #######
 # ENVIRONMENT to CONFIG
 rm -rf /var/www/html/config.php 
@@ -42,7 +72,7 @@ global \$CFG;
 " > /var/www/html/config.php
 
 while IFS= read -r line
-do  
+do
   key=`echo $line | cut -d = -f 1 |sed "s/MOODLE_//g"`
   if test $(echo $key | egrep __) ; then
     var=`echo $key | sed "s/__/['/g" | sed "s/$/']/g" `
@@ -50,7 +80,7 @@ do
     var=$key
   fi
 
-  value=`echo $line | cut -d = -f 2- `
+  value=`echo $line | cut -d = -f 2- |sed 's/\"//g'`
   case $value in 
     [0-9]*)        echo "\$CFG->$var=$value;" ;;
     true|false)   echo "\$CFG->$var=$value;" ;;
@@ -58,11 +88,20 @@ do
   esac
 
 done < <(printenv | egrep ^MOODLE_ | sort -u) >> /var/www/html/config.php 
+
 echo "
 require_once(dirname(__FILE__) . '/lib/setup.php'); 
 
 ?>" >> /var/www/html/config.php
 
+#######
+# permission check
+echo "Check permissions in $MOODLE_dataroot... "
+echo "placeholder" > $MOODLE_dataroot/placeholder
+chown -R www-data:www-data $MOODLE_dataroot
+find $MOODLE_dataroot -type d -exec chmod 700 {} \; 
+find $MOODLE_dataroot -type f -exec chmod 600 {} \; 
+
 # start up cron
 /usr/sbin/cron
 
diff --git a/lang_support.md b/lang_support.md
new file mode 100644
index 0000000..0bb08f1
--- /dev/null
+++ b/lang_support.md
@@ -0,0 +1,80 @@
+# List of supported languages
+af - translation updates for language Afrikaans
+am - translation updates for language Amharic
+an - translation updates for language Aragonese
+ar - translation updates for language Arabic
+as - translation updates for language Assamese
+az - translation updates for language Azerbaijani
+be - translation updates for language Belarusian
+bg - translation updates for language Bulgarian
+bn - translation updates for language Bengali
+br - translation updates for language Breton
+bs - translation updates for language Bosnian
+ca - translation updates for language Catalan; Valencian
+cs - translation updates for language Czech
+cy - translation updates for language Welsh
+da - translation updates for language Danish
+de - translation updates for language German
+dz - translation updates for language Dzongkha
+el - translation updates for language Greek, Modern (1453-)
+en - translation updates for language English
+eo - translation updates for language Esperanto
+es - translation updates for language Spanish; Castilian
+et - translation updates for language Estonian
+eu - translation updates for language Basque
+fa - translation updates for language Persian
+fi - translation updates for language Finnish
+fr - translation updates for language French
+ga - translation updates for language Irish
+gd - translation updates for language Gaelic; Scottish Gaelic
+gl - translation updates for language Galician
+gu - translation updates for language Gujarati
+he - translation updates for language Hebrew
+hi - translation updates for language Hindi
+hr - translation updates for language Croatian
+hu - translation updates for language Hungarian
+ia - translation updates for language Interlingua (International Auxiliary Language Association)
+id - translation updates for language Indonesian
+is - translation updates for language Icelandic
+it - translation updates for language Italian
+ja - translation updates for language Japanese
+ka - translation updates for language Georgian
+kk - translation updates for language Kazakh
+km - translation updates for language Central Khmer
+kn - translation updates for language Kannada
+ko - translation updates for language Korean
+ku - translation updates for language Kurdish
+lt - translation updates for language Lithuanian
+lv - translation updates for language Latvian
+mk - translation updates for language Macedonian
+ml - translation updates for language Malayalam
+mr - translation updates for language Marathi
+ms - translation updates for language Malay
+my - translation updates for language Burmese
+nb - translation updates for language Bokm?l, Norwegian; Norwegian Bokm?l
+ne - translation updates for language Nepali
+nl - translation updates for language Dutch; Flemish
+nn - translation updates for language Norwegian Nynorsk; Nynorsk, Norwegian
+oc - translation updates for language Occitan (post 1500); Proven?al
+or - translation updates for language Oriya
+pa - translation updates for language Panjabi; Punjabi
+pl - translation updates for language Polish
+pt - translation updates for language Portuguese
+ro - translation updates for language Romanian; Moldavian; Moldovan
+ru - translation updates for language Russian
+si - translation updates for language Sinhala; Sinhalese
+sk - translation updates for language Slovak
+sl - translation updates for language Slovenian
+sq - translation updates for language Albanian
+sr - translation updates for language Serbian
+sv - translation updates for language Swedish
+ta - translation updates for language Tamil
+te - translation updates for language Telugu
+tg - translation updates for language Tajik
+th - translation updates for language Thai
+tr - translation updates for language Turkish
+ug - translation updates for language Uighur; Uyghur
+uk - translation updates for language Ukrainian
+vi - translation updates for language Vietnamese
+xh - translation updates for language Xhosa
+