Fixes build when DOCKER_FROM is set but empty

The DOCKER_FROM is set to an empty value in the push tests. This expands the check to catch this test case
2020-04-09 10:26:21 +02:00 · 2020-04-09 10:26:21 +02:00 · 786f9b50d2
commit 786f9b50d2
parent 5909670690
1 changed files with 3 additions and 1 deletions
--- a/build.sh
+++ b/build.sh
@ -156,7 +156,9 @@ fi
 ###
 # Determining the value for DOCKER_FROM
 ###
-DOCKER_FROM="${DOCKER_FROM-python:3.7-alpine}"
+if [ -z "$DOCKER_FROM"]; then
+  DOCKER_FROM="python:3.7-alpine"
+fi

 ###
 # Variables for labelling the docker image