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-rw-r--r--tests/docker/dockerfiles/debian10.docker7
1 files changed, 4 insertions, 3 deletions
diff --git a/tests/docker/dockerfiles/debian10.docker b/tests/docker/dockerfiles/debian10.docker
index aeeb151b52..30a78813f2 100644
--- a/tests/docker/dockerfiles/debian10.docker
+++ b/tests/docker/dockerfiles/debian10.docker
@@ -13,9 +13,9 @@ FROM debian:buster-slim
 RUN cat /etc/apt/sources.list | sed "s/^deb\ /deb-src /" >> /etc/apt/sources.list
 
 # Install common build utilities
-RUN apt update
-RUN DEBIAN_FRONTEND=noninteractive apt install -yy eatmydata
-RUN DEBIAN_FRONTEND=noninteractive eatmydata \
+RUN apt update && \
+    DEBIAN_FRONTEND=noninteractive apt install -yy eatmydata && \
+    DEBIAN_FRONTEND=noninteractive eatmydata \
     apt install -y --no-install-recommends \
         bison \
         build-essential \
@@ -27,5 +27,6 @@ RUN DEBIAN_FRONTEND=noninteractive eatmydata \
         pkg-config \
         psmisc \
         python \
+        python3-sphinx \
         texinfo \
         $(apt-get -s build-dep qemu | egrep ^Inst | fgrep '[all]' | cut -d\  -f2)