ci: Build with debug level -g3 instead of -g0

Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Signed-off-by: Jakob Bornecrantz <jakob@collabora.com>

ci/Dockerfile

@@ -6,8 +6,8 @@ ENV PATH=$PATH:/usr/local/go/bin
 ENV LD_LIBRARY_PATH=/usr/local/lib64:/usr/local/lib:/usr/local/lib/x86_64-linux-gnu
 ENV PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/local/lib64/pkgconfig:/usr/local/share/pkgconfig:/usr/local/lib/x86_64-linux-gnu/pkgconfig
 ENV LDFLAGS="-L/usr/local/lib64 -L/usr/local/lib/ -L/usr/local/lib/x86_64-linux-gnu"
-ENV CFLAGS="-g0"
-ENV CXXFLAGS="-g0"
+ENV CFLAGS="-g3"
+ENV CXXFLAGS="-g3"
 ENV GIT_DATE="`date +%Y-%m-%d -d \"1 year ago\"`"
 
 RUN echo 'path-exclude=/usr/share/doc/*' > /etc/dpkg/dpkg.cfg.d/99-exclude-cruft