[gjs/esm/static-imports] Add libsoup to Docker.

[Evan Welsh <ewlsh src gnome org>]

commit e83e600c9fd9105a30e5d599681538326575ed9e
Author: Evan Welsh <noreply evanwelsh com>
Date:   Tue Jun 16 00:34:40 2020 -0500

    Add libsoup to Docker.

 test/extra/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/test/extra/Dockerfile b/test/extra/Dockerfile
index ae5590c9..a110c6b3 100644
--- a/test/extra/Dockerfile
+++ b/test/extra/Dockerfile
@@ -43,7 +43,7 @@ RUN dnf -y install --enablerepo=fedora-debuginfo,updates-debuginfo \
     gobject-introspection-devel gtk3-debuginfo gtk3-debugsource gtk3-devel \
     gtk4-debuginfo gtk4-debugsource gtk4-devel lcov libasan libubsan libtsan \
     meson ninja-build pkgconf readline-devel sysprof-devel systemtap-sdt-devel \
-    valgrind which Xvfb xz && \
+    libsoup valgrind which Xvfb xz && \
     dnf clean all && rm -rf /var/cache/dnf
 
 COPY --from=mozjs-build /root/mozjs-install/usr /usr