use ",," instead of export and case switch

Author: sparklyballs

README.md

@@ -100,6 +100,7 @@ Valid settings for VERSION are:-
 
 ## Versions
 
++ **03.01.17:** Use case insensitive version variable matching rather than export and make lowercase.
 + **17.10.16:** Allow use of uppercase version variable
 + **01.10.16:** Add TZ info to README.
 + **09.09.16:** Add layer badges to README.

root/etc/cont-init.d/50-plex-update

@@ -1,6 +1,4 @@
 #!/usr/bin/with-contenv bash
-# Check variable status
-export VERSION=$(echo "$VERSION" | tr '[:upper:]' '[:lower:]')
 
 # copy config on first run, regardless of update status
 [[ ! -e /etc/default/plexmediaserver ]] && \
@@ -90,9 +88,9 @@ fi
 INSTALLED_VERSION=$(dpkg-query -W -f='${Version}' plexmediaserver)
 
 # start update routine
-if [[ "$VERSION" = latest ]] || [[ "$VERSION" = plexpass ]] || [[ "$PLEXPASS" == "1" ]]; then
+if [[ "${VERSION,,}" = latest ]] || [[ "${VERSION,,}" = plexpass ]] || [[ "$PLEXPASS" == "1" ]]; then
 REMOTE_VERSION=$(curl -s "${PLEX_INSTALL}&X-Plex-Token=$PLEX_TOKEN"| cut -d "/" -f 5 )
-elif [[ "$VERSION" = public ]]; then
+elif [[ "${VERSION,,}" = public ]]; then
 PLEX_TOKEN=""
 REMOTE_VERSION=$(curl -s "${PLEX_INSTALL}&X-Plex-Token=$PLEX_TOKEN"| cut -d "/" -f 5 )
 else