Update: A friend just pointed out that setting `export DEBIAN_FRONTEND=noninteractive` helps, and I verified that in Docker. So _maybe_ we just dropped that setting?
edd@rob:~$ docker run --rm -ti ubuntu:bionic root@cf1720b38f97:/# apt-get update Get:1 http://security.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB] Get:2 http://archive.ubuntu.com/ubuntu bionic InRelease [242 kB] Get:3 http://security.ubuntu.com/ubuntu bionic-security/universe Sources [3783 B] Get:4 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages [18.8 kB] Get:5 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 Packages [1066 B] Get:6 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [88.7 kB] Get:7 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [83.2 kB] Get:8 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [65.5 kB] Get:9 http://archive.ubuntu.com/ubuntu bionic/universe Sources [11.5 MB] Get:10 http://archive.ubuntu.com/ubuntu bionic/multiverse amd64 Packages [186 kB] Get:11 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages [11.3 MB] Get:12 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages [1344 kB] Get:13 http://archive.ubuntu.com/ubuntu bionic/restricted amd64 Packages [13.5 kB] Get:14 http://archive.ubuntu.com/ubuntu bionic-updates/universe Sources [28.7 kB] Get:15 http://archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages [1660 B] Get:16 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [79.3 kB] Get:17 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [127 kB] Fetched 25.2 MB in 4s (5655 kB/s) Reading package lists... Done root@cf1720b38f97:/# export DEBIAN_FRONTEND=noninteractive root@cf1720b38f97:/# apt-get install -y tzdata Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: tzdata 0 upgraded, 1 newly installed, 0 to remove and 11 not upgraded. Need to get 188 kB of archives. After this operation, 3088 kB of additional disk space will be used. Get:1 http://archive.ubuntu.com/ubuntu bionic/main amd64 tzdata all 2018d-1 [188 kB] Fetched 188 kB in 1s (271 kB/s) debconf: delaying package configuration, since apt-utils is not installed Selecting previously unselected package tzdata. (Reading database ... 4035 files and directories currently installed.) Preparing to unpack .../tzdata_2018d-1_all.deb ... Unpacking tzdata (2018d-1) ... Setting up tzdata (2018d-1) ... Current default time zone: 'Etc/UTC' Local time is now: Mon May 28 17:10:20 UTC 2018. Universal Time is now: Mon May 28 17:10:20 UTC 2018. Run 'dpkg-reconfigure tzdata' if you wish to change it. root@cf1720b38f97:/# -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1773687 Title: [bionic] no unattended installation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tzdata/+bug/1773687/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
