Set correct permissions of /tmp dir during GSC build

[dimakuv]

Description of the changes

The original app image may have changed the permissions of /tmp dir. At the same time, correct permissions are required for installation of packages during GSC build. This commit adds explicit chmod 1777 /tmp.

Fixes #193.

How to test this PR?

Looks like a reproducer would be like this:

FROM debian:12
RUN chmod 1777 /tmp
USER ${non_root_uid}:${non_root_gid}

But I haven't tested really.

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This change is 

[woju]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion, not enough approvals from maintainers (2 more required), not enough approvals from different teams (1 more required, approved so far: Intel) (waiting on @dimakuv)

a discussion (no related file):
Looks invalid to me. First of all, wrong permissions or mismounted core directories is a problem with base image, not with gsc and we can't fix up for all possible problems. Second, debian:12 LGTM:

% docker run -it --rm --volume $PWD:/gramine debian:12 ls -ld /tmp    
drwxrwxrwt 2 root root 4096 Jun 12  2023 /tmp

So the problem is elsewhere. I'll ask in #193.

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[mkow]

Reviewable status: 0 of 1 files reviewed, 2 unresolved discussions, not enough approvals from maintainers (2 more required), not enough approvals from different teams (1 more required, approved so far: Intel) (waiting on @dimakuv and @woju)

a discussion (no related file):

Previously, woju (Wojtek Porczyk) wrote…

Looks invalid to me. First of all, wrong permissions or mismounted core directories is a problem with base image, not with gsc and we can't fix up for all possible problems. Second, debian:12 LGTM:

% docker run -it --rm --volume $PWD:/gramine debian:12 ls -ld /tmp    
drwxrwxrwt 2 root root 4096 Jun 12  2023 /tmp

So the problem is elsewhere. I'll ask in #193.

+1, this doesn't seem like a GSC bug, this PR seems like a workaround for a misconfiguration of someone's base image?

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-- commits line 4 at r1:

The original app image may have changed the permissions of /tmp dir.

What apps are doing that? Reconfiguring the system globally? Sounds suspicious to me...

[dimakuv]

This is invalid, the problem was elsewhere. See the comments from other reviewers. Closing.