small fixes

Author: MarvAmBass

get-version.sh

@@ -2,7 +2,7 @@
 export IMG=$(docker build -q --pull --no-cache -t 'get-version' .)
 
 export DEBIAN_VERSION=$(docker run --rm -t get-version cat /etc/debian_version | tail -n1 | tr -d '\r')
-export TVHEADEND_VERSION=$(docker run --rm -t get-version dpkg --list | grep tvheadend | grep '^ii' | sed 's/^[^0-9]*//g' | cut -d ' ' -f1 | sed 's/[+=]/_/g' | tr -d '\r')
+export TVHEADEND_VERSION=$(docker run --rm -t get-version sh -c 'dpkg --list | grep tvheadend' | grep '^ii' | sed 's/^[^0-9]*//g' | cut -d ' ' -f1 | sed 's/[+=]/_/g' | tr -d '\r')
 [ -z "$DEBIAN_VERSION" ] && exit 1
 
 export IMGTAG=$(echo "$1d$DEBIAN_VERSION-t$TVHEADEND_VERSION")