[Buildroot] [git commit] support/docker: use APT::Retries in apt-get calls to retry

[Yann E. MORIN]

commit: https://git.buildroot.net/buildroot/commit/?id=7a7c6725f6ca5c1108e6fb76fad414132555b373
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master

snapshot.debian.org is notoriously slow, and quite often leads to
timeouts when downloading packages. To give us a better chance of
succeeding, let's retry 3 times before failing.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
---
 support/docker/Dockerfile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/support/docker/Dockerfile b/support/docker/Dockerfile
index de1534e77a..a16c1e3849 100644
--- a/support/docker/Dockerfile
+++ b/support/docker/Dockerfile
@@ -20,8 +20,8 @@ COPY apt-sources.list /etc/apt/sources.list
 
 # The container has no package lists, so need to update first
 RUN dpkg --add-architecture i386 && \
-    apt-get update -y
-RUN apt-get install -y --no-install-recommends \
+    apt-get -o APT::Retries=3 update -y
+RUN apt-get -o APT::Retries=3 install -y --no-install-recommends \
         bc \
         build-essential \
         bzr \