chore: add client-linuxapp container

[rdotjain]

This PR adds a fdo-client-linuxapp container.

• Updated CI/CD to include build of the container and push it to quay.io
• Updated README with commands to run the container
• FIxes #499

[runcom]

uhm, why is copr failing now :thinking:

[runcom]

cc @7flying

[rdotjain]

uhm, why is copr failing now 🤔

i think this issue is reported in #506

[7flying]

I'm not seeing the container show up in quay yet, shouldn't it be showing?

Now that we have the client, could we add a small test checking an e2e scenario?

[7flying]

uhm, why is copr failing now

The specfile had some changes that @nullr0ute needs to propagate over this repo in order to fix it, but it has already been tracked, make rpm is also broken due to these changes (but we have a workaround)

[rdotjain]

I'm not seeing the container show up in quay yet, shouldn't it be showing?

it should be triggered after merge to main, i think?

Now that we have the client, could we add a small test checking an e2e scenario?

do we want the tests to be part of same PR, or create another one?

[7flying]

I'm not seeing the container show up in quay yet, shouldn't it be showing?

it should be triggered after merge to main, i think?

Now that we have the client, could we add a small test checking an e2e scenario?

do we want the tests to be part of same PR, or create another one?

forget about that last part

[7flying]

@paulwhalen can you please take a look?