Revert alpine

[aelsabbahy]

Checklist

• [ ] make test-all (UNIX) passes. CI will also test this
• [ ] unit and/or integration tests are included (if applicable)
• [ ] documentation is changed or added (if applicable)

Description of change

Alpine integration test is failing consistently as of late. Reverting to old alpine version to see if that resolves the issue.

[aelsabbahy]

Seems re-using :latest is a bad idea since travis-ci seems to cache it now.

Next up will be modifying this PR to use pinned docker tags. image_name:$(sum of dockerfile)

Will also investigate what's causing alpine to behave differently. I wonder if it's as simple as tcp6 :thinking:

[dklimpel]

-opts=(--env OS=$os --cap-add SYS_ADMIN -v "$PWD/goss:/goss" -d --name "$container_name" --security-opt seccomp:unconfined --security-opt label:disable)
+opts=(--env OS=$os --cap-add SYS_ADMIN -v "$PWD/goss:/goss" -d --name "$container_name" --security-opt seccomp:unconfined --security-opt label:disable --privileged)

I did a lot of tests. Mostly I had localy trouble with this line. Perhaps Travis CI has changed this rights management.

For example: https://github.com/goss-org/goss/pull/908/files#diff-42ccbd89e05a79ca47745ab8cf461626edf35a0cd3429aae34b070a832352b94R39

[dklimpel]

I can reproduce this with GH action. Also with alpine:3.12.

Apache2 does not listen on IPv4. Either port 80 nor 8080. I have no problems on my local machine.

I tried it on port 8080:

Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 127.0.0.11:37453        0.0.0.0:*               LISTEN      -
tcp        0      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      -
tcp        0      0 :::8888                 :::*                    LISTEN      -
tcp        0      0 :::8080                 :::*                    LISTEN      168/httpd

[aelsabbahy]

fixed by #937