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@AkihiroSuda: Correct me if I'm wrong, img does have very useful features that buildkit doesn't: img can run rootless outside of containers, and it is truely daemonless. I'm extensively using...

I also have this issue. It's impeding me for a while now (It prevented me from using img on Debian for a long time (~5 months from now), until I...

I confirm that v0.5.7 never execute `/proc/self/exe` past the first time it unshares namespaces. I believe something changed upstream, both in _buildkit_ and _docker_, but I know little about these...

@jessfraz Is there a need for changing user namespaces on init functions ? I think I found a clean way to fix this, as long as I unshare past the...

Thanks for testing @GitNico. I'll try to come up with something cleaner, then submit a PR. In the meantime I'll try to maintain a downstream fix on my clone. I'll...

I found the breaking change between v0.5.7 and v0.5.8: buildkit changed the way it extracts archive files: 1. https://github.com/moby/buildkit/compare/v0.4.0...v0.5.1#diff-905097ba6a4e36b3afbb1204e52315791dc0915f2a845c768bc84c6af5db1e1fR477 2. https://github.com/moby/buildkit/compare/v0.4.0...v0.5.1#diff-905097ba6a4e36b3afbb1204e52315791dc0915f2a845c768bc84c6af5db1e1fR772 3. https://github.com/moby/buildkit/compare/v0.4.0...v0.5.1#diff-905097ba6a4e36b3afbb1204e52315791dc0915f2a845c768bc84c6af5db1e1fR761 It "now" ("then", actually) ultimately uses the...

Hey guys, sorry for the delay, I had a lot to do at work. You can find the fix at https://github.com/lel-amri/img/commit/f0979f292a08f204dc9604afe81a393a641b8f94. I'll try to keep the [issue-334](https://github.com/lel-amri/img/tree/issue-334) branch up-to-date with...

I got the same issue as well. This broke in _aiopg_ at commit https://github.com/aio-libs/aiopg/commit/ef1cabeeb7023841184f23197298215d1d45209d, precisely because of [this line](https://github.com/aio-libs/aiopg/commit/ef1cabeeb7023841184f23197298215d1d45209d#diff-5cd645a0fefa4c18f3d46f89c0af33bf9123dc16aeae5a53d8c347a69dcd1f96L65). PyPlanet-wise, it broke because of [this change](https://github.com/PyPlanet/PyPlanet/commit/39a8748103b78cbc5213f71235eb1e414116b07a#diff-4d7c51b1efe9043e44439a949dfd92e5827321b34082903477fd04876edb7552L10) in commit https://github.com/PyPlanet/PyPlanet/commit/39a8748103b78cbc5213f71235eb1e414116b07a. There...

This can also be fixed once the PR for #1153 (#1152 ?) is merged. My PR can already be merged and bring a temporary solution, though.

I tried replacing img with buildkit in my workflow. It actually went pretty well. The only "drawback" is (well, "was", it isn't really a problem anymore for me) the fact...