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Dockerfile.isar: Adjust binfmt setup for qemu-user-static

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It turned out [1] that our current way of setting up binfmt_misc during
container start does not reliably work, namely does not overwrite
incompatible host settings. Running dpkg-reconfigure solves this.

To avoid confusing warnings of the kind

update-binfmts: warning: qemu-aarch64 already enabled in kernel.

we filter them out. That will continue to flood the console with
warnings in case the container is started without privileges.

[1] https://groups.google.com/forum/#!msg/isar-users/2G-Diz0BR1Y/Y0X6eHggCgAJ

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Daniel Wagner <daniel.wagner@siemens.com>
This commit is contained in:
Jan Kiszka 2019-03-19 15:25:02 +01:00 committed by Daniel Wagner
parent 6fdbe299a4
commit 2fc711a459
1 changed files with 1 additions and 1 deletions
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Dockerfile.isar
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@ -20,4 +20,4 @@ RUN echo "builder ALL=NOPASSWD: ALL" > /etc/sudoers.d/builder-nopasswd && \
RUN echo "Defaults env_keep += \"ftp_proxy http_proxy https_proxy no_proxy\"" \
> /etc/sudoers.d/env_keep && chmod 660 /etc/sudoers.d/env_keep
RUN sed -i "s|#!/bin/bash|\0\n\nupdate-binfmts --enable|" /kas/docker-entrypoint
RUN sed -i 's|#!/bin/bash|\0\n\ndpkg-reconfigure qemu-user-static 2>\&1 \| grep -v "already enabled in kernel"|' /kas/docker-entrypoint