diff -r fcf3dcc8ab3b -r 51c2d434e10e tests/tools/Docker/Dockerfile
--- a/tests/tools/Docker/Dockerfile	Thu Dec 15 14:59:27 2022 +0100
+++ b/tests/tools/Docker/Dockerfile	Thu Dec 22 02:46:08 2022 +0100
@@ -17,6 +17,10 @@
 RUN groupadd -g $GID $UNAME
 RUN useradd -m -u $UID -g $GID -s /bin/bash $UNAME
 
+RUN apt-get install locales
+RUN locale-gen en_US.UTF-8
+RUN update-locale LANG=en_US.UTF-8
+
 RUN set -xe \
     && apt-get update \
     && TZ="America/Paris" \