docker: enable netmap to extend code coverage on amd64

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

tests/docker/dockerfiles/debian-amd64.docker

@@ -26,3 +26,11 @@ RUN DEBIAN_FRONTEND=noninteractive eatmydata \
         libgbm-dev
 RUN git clone git://anongit.freedesktop.org/virglrenderer /usr/src/virglrenderer
 RUN cd /usr/src/virglrenderer && ./autogen.sh && ./configure --with-glx --disable-tests && make install
+
+# netmap
+RUN DEBIAN_FRONTEND=noninteractive eatmydata \
+    apt-get install -y --no-install-recommends \
+        linux-headers-amd64
+RUN git clone https://github.com/luigirizzo/netmap.git /usr/src/netmap
+RUN cd /usr/src/netmap/LINUX && ./configure --no-drivers --no-apps --kernel-dir=$(ls -d /usr/src/linux-headers-*-amd64) && make install
+ENV QEMU_CONFIGURE_OPTS --enable-netmap