diff --git a/CloudronManifest.json b/CloudronManifest.json
index 8dbecb6..7d32bf0 100644
--- a/CloudronManifest.json
+++ b/CloudronManifest.json
@@ -20,7 +20,7 @@
       "defaultValue": 29418
     }
   },
-  "manifestVersion": 1,
+  "manifestVersion": 2,
   "website": "https://gitea.io",
   "contactEmail": "apps@cloudron.io",
   "icon": "file://logo.png",
@@ -35,6 +35,6 @@
   "tags": [ "version control", "git", "code hosting", "development" ],
   "changelog": "file://CHANGELOG",
   "postInstallMessage": "file://POSTINSTALL.md",
-  "minBoxVersion": "1.10.0",
+  "minBoxVersion": "4.1.4",
   "documentationUrl": "https://cloudron.io/documentation/apps/gitea/"
 }
diff --git a/start.sh b/start.sh
index b70ca24..d266095 100755
--- a/start.sh
+++ b/start.sh
@@ -9,13 +9,13 @@ setup_ldap_source() {
 
     # Get the existing LDAP source status. This allows the user to disable LDAP
     # Note that this method is deprecated since this app now supports optionalSso
-    ldap_status=$(mysql -u"${MYSQL_USERNAME}" -p"${MYSQL_PASSWORD}" -h mysql --database="${MYSQL_DATABASE}" -N -B -e "select is_actived from login_source WHERE name='cloudron';")
+    ldap_status=$(mysql -u"${CLOUDRON_MYSQL_USERNAME}" -p"${CLOUDRON_MYSQL_PASSWORD}" -h mysql --database="${CLOUDRON_MYSQL_DATABASE}" -N -B -e "select is_actived from login_source WHERE name='cloudron';")
     [[ -z "${ldap_status}" ]] && ldap_status="1"
 
     now=$(date +%s)
 
-    if mysql -u"${MYSQL_USERNAME}" -p"${MYSQL_PASSWORD}" -h mysql --database="${MYSQL_DATABASE}" \
-        -e "REPLACE INTO login_source (id, type, name, is_actived, cfg, created_unix, updated_unix) VALUES (1,2,'cloudron',${ldap_status},'{\"Name\":\"cloudron\",\"Host\":\"${LDAP_SERVER}\",\"Port\":${LDAP_PORT},\"UseSSL\":false,\"SkipVerify\":true,\"BindDN\":\"${LDAP_BIND_DN}\",\"BindPassword\":\"${LDAP_BIND_PASSWORD}\",\"UserBase\":\"${LDAP_USERS_BASE_DN}\",\"AttributeUsername\":\"username\",\"AttributeName\":\"displayname\",\"AttributeSurname\":\"\",\"AttributeMail\":\"mail\",\"Filter\":\"(\\\\u007C(mail=%[1]s)(username=%[1]s))\"}','${now}','${now}');"; then
+    if mysql -u"${CLOUDRON_MYSQL_USERNAME}" -p"${CLOUDRON_MYSQL_PASSWORD}" -h mysql --database="${CLOUDRON_MYSQL_DATABASE}" \
+        -e "REPLACE INTO login_source (id, type, name, is_actived, cfg, created_unix, updated_unix) VALUES (1,2,'cloudron',${ldap_status},'{\"Name\":\"cloudron\",\"Host\":\"${CLOUDRON_LDAP_SERVER}\",\"Port\":${CLOUDRON_LDAP_PORT},\"UseSSL\":false,\"SkipVerify\":true,\"BindDN\":\"${CLOUDRON_LDAP_BIND_DN}\",\"BindPassword\":\"${CLOUDRON_LDAP_BIND_PASSWORD}\",\"UserBase\":\"${CLOUDRON_LDAP_USERS_BASE_DN}\",\"AttributeUsername\":\"username\",\"AttributeName\":\"displayname\",\"AttributeSurname\":\"\",\"AttributeMail\":\"mail\",\"Filter\":\"(\\\\u007C(mail=%[1]s)(username=%[1]s))\"}','${now}','${now}');"; then
         echo "==> LDAP Authentication was setup with activation status ${ldap_status}"
     else
         echo "==> Failed to setup LDAP authentication"
@@ -45,11 +45,11 @@ setup_auth() {
 
     echo "==> Gitea is up, setting up auth"
 
-    if [[ -n "${LDAP_SERVER:-}" ]]; then
+    if [[ -n "${CLOUDRON_LDAP_SERVER:-}" ]]; then
         setup_ldap_source
     fi
 
-    user_count=$(mysql -u"${MYSQL_USERNAME}" -p"${MYSQL_PASSWORD}" -h mysql --database="${MYSQL_DATABASE}" -N -B -e "SELECT count(*) FROM user;")
+    user_count=$(mysql -u"${CLOUDRON_MYSQL_USERNAME}" -p"${CLOUDRON_MYSQL_PASSWORD}" -h mysql --database="${CLOUDRON_MYSQL_DATABASE}" -N -B -e "SELECT count(*) FROM user;")
     # be careful, not to create root user for existing LDAP based installs
     if [[ "${user_count}" == "0" ]]; then
         echo "==> Setting up root user for first run"
@@ -94,13 +94,13 @@ crudini --merge "/run/gitea/app.ini" < "/app/data/app.ini"
 
 # override important values
 crudini --set "/run/gitea/app.ini" database DB_TYPE mysql
-crudini --set "/run/gitea/app.ini" database HOST "${MYSQL_HOST}:${MYSQL_PORT}"
-crudini --set "/run/gitea/app.ini" database NAME "${MYSQL_DATABASE}"
-crudini --set "/run/gitea/app.ini" database USER "${MYSQL_USERNAME}"
-crudini --set "/run/gitea/app.ini" database PASSWD "${MYSQL_PASSWORD}"
+crudini --set "/run/gitea/app.ini" database HOST "${CLOUDRON_MYSQL_HOST}:${CLOUDRON_MYSQL_PORT}"
+crudini --set "/run/gitea/app.ini" database NAME "${CLOUDRON_MYSQL_DATABASE}"
+crudini --set "/run/gitea/app.ini" database USER "${CLOUDRON_MYSQL_USERNAME}"
+crudini --set "/run/gitea/app.ini" database PASSWD "${CLOUDRON_MYSQL_PASSWORD}"
 crudini --set "/run/gitea/app.ini" database SSL_MODE "disable"
 crudini --set "/run/gitea/app.ini" server PROTOCOL "http"
-crudini --set "/run/gitea/app.ini" server DOMAIN "${APP_DOMAIN}"
+crudini --set "/run/gitea/app.ini" server DOMAIN "${CLOUDRON_APP_DOMAIN}"
 crudini --set "/run/gitea/app.ini" server ROOT_URL "https://%(DOMAIN)s/"
 crudini --set "/run/gitea/app.ini" server HTTP_ADDR ""
 crudini --set "/run/gitea/app.ini" server HTTP_PORT "3000"
@@ -109,10 +109,10 @@ crudini --set "/run/gitea/app.ini" server SSH_PORT "${SSH_PORT}"
 crudini --set "/run/gitea/app.ini" server APP_DATA_PATH "/app/data/appdata"
 crudini --set "/run/gitea/app.ini" repository ROOT "/app/data/repository"
 crudini --set "/run/gitea/app.ini" repository.upload TEMP_PATH "/run/gitea/tmp/uploads"
-crudini --set "/run/gitea/app.ini" mailer HOST "${MAIL_SMTP_SERVER}:${MAIL_SMTPS_PORT}"
-crudini --set "/run/gitea/app.ini" mailer USER "${MAIL_SMTP_USERNAME}"
-crudini --set "/run/gitea/app.ini" mailer PASSWD "${MAIL_SMTP_PASSWORD}"
-crudini --set "/run/gitea/app.ini" mailer FROM "${MAIL_FROM}"
+crudini --set "/run/gitea/app.ini" mailer HOST "${CLOUDRON_MAIL_SMTP_SERVER}:${CLOUDRON_MAIL_SMTPS_PORT}"
+crudini --set "/run/gitea/app.ini" mailer USER "${CLOUDRON_MAIL_SMTP_USERNAME}"
+crudini --set "/run/gitea/app.ini" mailer PASSWD "${CLOUDRON_MAIL_SMTP_PASSWORD}"
+crudini --set "/run/gitea/app.ini" mailer FROM "${CLOUDRON_MAIL_FROM}"
 crudini --set "/run/gitea/app.ini" mailer SKIP_VERIFY "true"
 crudini --set "/run/gitea/app.ini" security INSTALL_LOCK "true"
 crudini --set "/run/gitea/app.ini" log MODE "console"