To do this, we run the e2e test as a different user. To do that, we
need git-sync to make sure that everything is group accessible. To
clean up after the test, we need everything to be group writable. To do
that, we add a new flag: `--group-write`.
1) Was calling Wait() on the child process, but also calling Wait4,
which would race, causing an occasional error or panic.
2) In testing (1), I observed occasional hangs. Tracing it down to a
SIGWINCH, which masked a SIGCHLD, causing it to hang. Both seem fixed.
Added a manual test script.
This detects when it is running as pid 1, and becomes an init process.
Specifically this means handling SIGCHLD and reaping processes
(otherwise they become zombies) and forwarding signals to "real"
process.
We fork and re-exec ourselves so that we only get *this* SIGCHLD for
orphaned processes (re-parented to 1) and not the real events from
running things like git or ssh.
Faster builds and versions from tags. Also use alpine as a base image. We
need alpine for other architectures...
Also change the --wait flag to take a float for sub-second waits.
Tim Hockin
ugurkenar