tree b3863934b7e11ae9f6aae6a31b240ae1da2b2e31
parent 3771e69a9abf5035ac550bb2da8eafc2e653daa2
author Maxim Pugachev <pugachev.mm@gmail.com> 1588099746 +0200
committer Tobias Klauser <tobias.klauser@gmail.com> 1588104294 +0000

unix: switch to Ubuntu 20.04 in Dockerfile

ubuntu:19.04 is not supported anymore and update repos are unavailable, so
build process on Linux just fails. Latest stable ubuntu:20.04 works fine.
Also, DEBIAN_FRONTEND=noninteractive env variable has been added to prevent
unneeded questions during installation of tzdata package.

Fixes golang/go#38724

Change-Id: I2d7730d83fc051de2879d4f97fc7942090d2574c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/230577
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>