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-rw-r--r--ci/docker/xenial3
1 files changed, 2 insertions, 1 deletions
diff --git a/ci/docker/xenial b/ci/docker/xenial
index 67867edc6..1c8e585d2 100644
--- a/ci/docker/xenial
+++ b/ci/docker/xenial
@@ -1,4 +1,5 @@
-FROM ubuntu:xenial AS apt
+ARG BASE=ubuntu:xenial
+FROM ${BASE} AS apt
RUN apt-get update && \
DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
bzip2 \