ci: Ensure we always install the right Meson
Specifying the version in the Dockerfile ensures that we don't just rely
on the latest version, but instead we use the same version as the one we
require.
@@ -22,7 +22,7 @@ RUN locale-gen C.UTF-8 && /usr/sbin/update-locale LANG=C.UTF-8
ENV LANG=C.UTF-8 LANGUAGE=C.UTF-8 LC_ALL=C.UTF-8
-RUN pip3 install meson
+RUN pip3 install meson==0.50.1
COPY graphene-run-tests.sh /root
RUN chmod +x /root/graphene-run-tests.sh
