Build script fixes

latex/build-image.sh

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 echo "Build will be tagged with $1"
 echo "Build directory is $(pwd)"
 
@@ -12,6 +14,6 @@ docker push "$1"
 if [ -n "$OLD_IMG" ]; then
 	if [ "$OLD_IMG" != "$(docker image ls -q "$1")" ]; then
 		echo "New build uploaded, removing old image, id: $OLD_IMG"
-		docker image rm "$OLD_IMG"
+		docker image rm "$OLD_IMG" || true
 	fi
 fi