Parse commit body (#214)

Revert formatting change in ac1e937 which causes only the commit subject
to be parsed

entrypoint.sh

@@ -123,7 +123,7 @@ then
 fi
 
 # get the merge commit message looking for #bumps
-log=$(git show -s --format=%s)
+log=$(git show -s --format=%B)
 echo "Last commit message: $log"
 
 case "$log" in