[google/syzkaller] c5fa3e: tools/docker: fix multi-arch build for env image

[Alexander Potapenko]

Branch: refs/heads/gh-readonly-queue/master/pr-6804-65ce8d55289e1ed09cc51f7d608e3b3bc666a3f8
Home: https://github.com/google/syzkaller
Commit: c5fa3ef41c9a4a57c043a0597d892b372a8a40e8
https://github.com/google/syzkaller/commit/c5fa3ef41c9a4a57c043a0597d892b372a8a40e8
Author: Alexander Potapenko <gli...@google.com>
Date: 2026-02-11 (Wed, 11 Feb 2026)

Changed paths:
M tools/docker/env/Dockerfile

Log Message:
-----------
tools/docker: fix multi-arch build for env image

The env Docker image currently fails to build on non-x86 architectures
because it attempts to install i386 libraries that are unavailable on
arm64.
Additionally, the monolithic apt-get command causes timeouts and dpkg
errors.

Fix the build by making i386 package installation conditional on amd64
and splitting the installation into smaller, more stable steps.

While at it, remove the sudo usage (not necessary, because Docker setup
is performed as root).


Commit: 76a109e23e28a4d8e6e31029528eb3bb2189bfaa
https://github.com/google/syzkaller/commit/76a109e23e28a4d8e6e31029528eb3bb2189bfaa
Author: Alexander Potapenko <gli...@google.com>
Date: 2026-02-11 (Wed, 11 Feb 2026)

Changed paths:
M tools/docker/README.md

Log Message:
-----------
tools/docker: update README.md

Now that both Docker containers are multiarch, reflect that in the
documentation.


Compare: https://github.com/google/syzkaller/compare/c5fa3ef41c9a%5E...76a109e23e28

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[Alexander Potapenko]

Branch: refs/heads/master

Compare: https://github.com/google/syzkaller/compare/65ce8d55289e...76a109e23e28