[gimp-web/oscp] Append '.git' to git repo URL

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit c0df7df401cd66a3a37180ec9a70bd37be63cd4d
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Wed Mar 18 12:49:27 2020 +0100

    Append '.git' to git repo URL

 testing.gimp.org/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/testing.gimp.org/Dockerfile b/testing.gimp.org/Dockerfile
index c5ed97a2..3f36422c 100644
--- a/testing.gimp.org/Dockerfile
+++ b/testing.gimp.org/Dockerfile
@@ -2,7 +2,7 @@ FROM centos:7
 RUN yum install -y epel-release && \
     yum install -y python2-pip git 
 
-RUN git clone --depth 1 --branch testing https://gitlab.gnome.org/Infrastructure/gimp-web && \
+RUN git clone --depth 1 --branch testing https://gitlab.gnome.org/Infrastructure/gimp-web.git && \
     cd gimp-web && \
     pip install -r py2-requirements.txt && \
     pelican content -o output -s pelicanconf.py