Auto merge of #78506 - cuviper:ubuntu-lts, r=pietroalbini

ci: update x86_64-gnu and x86_64-gnu-debug to ubuntu:20.04 The former `ubuntu:19.10` reached EOL in July, 2020, whereas `ubuntu:20.04` is an LTS release supported until 2025. These are non-dist CI images, so the impact should be low.
rust-lang · Oct 29, 2020 · ae9731c · ae9731c
2 parents 1d6a0b0 + d9cbd19
commit ae9731c
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diff --git a/src/ci/docker/host-x86_64/x86_64-gnu-debug/Dockerfile b/src/ci/docker/host-x86_64/x86_64-gnu-debug/Dockerfile
@@ -1,5 +1,6 @@
-FROM ubuntu:19.10
+FROM ubuntu:20.04
 
+ARG DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && apt-get install -y --no-install-recommends \
  g++ \
  make \

diff --git a/src/ci/docker/host-x86_64/x86_64-gnu/Dockerfile b/src/ci/docker/host-x86_64/x86_64-gnu/Dockerfile
@@ -1,5 +1,6 @@
-FROM ubuntu:19.10
+FROM ubuntu:20.04
 
+ARG DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && apt-get install -y --no-install-recommends \
  g++ \
  make \