don't try to run npm, it's not available in official jenkins image
this should fix the PR deployer
@@ -21,6 +21,4 @@ RUN for f in /usr/share/jenkins/ref/plugins/blueocean-*.jpi; do mv "$f" "$f.over
# let scripts customize the reference Jenkins folder. Used in bin/build-in-docker to inject the git build data
COPY docker/ref /usr/share/jenkins/ref
-RUN npm install -g npm@3.10.9
-
USER jenkins
