[librsvg-oci-images/add-sudo-for-debian-testing] Add sudo package on debian:testing

[Sven Neumann <sneumann src gnome org>]

commit 728413cf7120950e619de8c6e7b5285270b0e292
Author: Sven Neumann <sven svenfoo org>
Date:   Wed Oct 28 23:46:28 2020 +0100

    Add sudo package on debian:testing

 debian/testing.Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/debian/testing.Dockerfile b/debian/testing.Dockerfile
index 596681d..a101d75 100644
--- a/debian/testing.Dockerfile
+++ b/debian/testing.Dockerfile
@@ -8,7 +8,7 @@ RUN apt update -yqq \
     gtk-doc-tools libpango1.0-dev libgtk-3-dev \
     libxml2-dev libcroco3-dev libcairo2-dev \
     ca-certificates openssl libssl-dev \
-    autotools-dev libltdl-dev autopoint \
+    autotools-dev libltdl-dev autopoint sudo \
     && apt clean \
     && rm -rf /var/lib/apt/lists \
     && cargo install cargo-c