[Qemu-devel] [PATCH-for-4.1] tests/docker: Install Sphinx in the Ubuntu images

[Philippe Mathieu-Daudé]

Since commit 5f71eac06e the Sphinx tool is required
to build the rST documentation.

This fixes:

 $ ./configure --enable-docs

 ERROR: User requested feature docs
        configure was not able to find it.
        Install texinfo, Perl/perl-podlators and python-sphinx

Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
 tests/docker/dockerfiles/ubuntu.docker     | 1 +
 tests/docker/dockerfiles/ubuntu1804.docker | 1 +
 2 files changed, 2 insertions(+)

diff --git a/tests/docker/dockerfiles/ubuntu.docker 
b/tests/docker/dockerfiles/ubuntu.docker
index d3b72209c8..2500ec84b6 100644
--- a/tests/docker/dockerfiles/ubuntu.docker
+++ b/tests/docker/dockerfiles/ubuntu.docker
@@ -61,6 +61,7 @@ ENV PACKAGES flex bison \
     libxen-dev \
     make \
     python-yaml \
+    python3-sphinx \
     sparse \
     texinfo \
     xfslibs-dev
diff --git a/tests/docker/dockerfiles/ubuntu1804.docker 
b/tests/docker/dockerfiles/ubuntu1804.docker
index 9d80b11500..0bb8088658 100644
--- a/tests/docker/dockerfiles/ubuntu1804.docker
+++ b/tests/docker/dockerfiles/ubuntu1804.docker
@@ -48,6 +48,7 @@ ENV PACKAGES flex bison \
     libxen-dev \
     make \
     python-yaml \
+    python3-sphinx \
     sparse \
     texinfo \
     xfslibs-dev
-- 
2.20.1