[Bug 1854202] Re: Ubuntu 14.04 container fails to install app because of ESM dependency

[Andreas Hasenack]

We became aware of this in the PR that started building trusty docker
images: https://github.com/docker-library/official-images/pull/7029

For some reason, during the build process, the /etc/apt/preferences.d
/ubuntu-esm-infra-trusty file got wiped, or was never created. This file
pins the esm repository at a negative value, so that it won't be
considered for upgrades unless esm is fully enabled.

We are still troubleshooting that build process, and a PR was just
created to reverse that change for now (see https://github.com/docker-
library/official-images/pull/7038)

A workaround is to create that pinning file manually:
cat > /etc/apt/preferences.d/ubuntu-esm-infra-trusty <<EOF
# Written by ubuntu-advantage-tools
Package: *
Pin: release o=UbuntuESM, n=trusty
Pin-Priority: never
EOF

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https://bugs.launchpad.net/bugs/1854202

Title:
  Ubuntu 14.04 container fails to install app because of ESM dependency

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