[gimp-web/oscp] Land python3 as one of the dependencies

[Andrea Veri <averi src gnome org>]

commit ab406c422d677ec0038a9c8a253f295ee4a98c66
Author: Andrea Veri <av gnome org>
Date:   Tue Sep 7 10:25:36 2021 +0000

    Land python3 as one of the dependencies

 docs.gimp.org/docs_build/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/docs.gimp.org/docs_build/Dockerfile b/docs.gimp.org/docs_build/Dockerfile
index 7f4f1bba..ad080a4e 100644
--- a/docs.gimp.org/docs_build/Dockerfile
+++ b/docs.gimp.org/docs_build/Dockerfile
@@ -3,7 +3,7 @@ USER root
 
 RUN yum install -y docbook-dtds docbook-style-dsssl docbook-style-xsl rsync \
                    docbook-utils-pdf docbook-utils git autoconf automake make \
-                   libxslt gettext
+                   libxslt gettext python3
 
 RUN groupadd gimpdocs -g 1000580000 && \
     useradd gimpdocs -g 1000580000 -u 1000580000 -r -l -m