Merged in [19741] from lars@eggert.org:

rjsparks · rjsparks · commit c0df2cd3007a · 2021-12-02T20:47:07.000Z
Add ghostscript to app image, which is used by some tests. - Legacy-Id: 19745 Note: SVN reference [19741] has been migrated to Git commit e3b430d
diff --git a/docker/app.Dockerfile b/docker/app.Dockerfile
@@ -30,6 +30,7 @@ RUN apt-get install -qy \
 	fish \
 	gawk \
 	gcc \
+	ghostscript \
 	git \
 	gnupg \
 	graphviz \
