Updates dokku-daemon for compatibility

[dean1012]

• Allow use of dokku-daemon with newer dokku versions
• Updates documentation

[josegonzalez]

I'll merge once tests pass.

[josegonzalez]

Just be sure to comment here when they do to remind me :)

[dean1012]

@josegonzalez I am running low on time at the moment and don't have time to look at this right now. I'll get to it when I can but hopefully, someone else in the community will find time before I do.

I can confirm that this works for me when using the following:

• dokku 0.18.3
• ubuntu bionic
• this pull request

[dean1012]

@josegonzalez Just wanted to update you...

I've got all the testing fixed except one thing. The client_command function uses nc to pipe commands into the socket and get the result.

Unfortunately, it seems that nc is not sending the resulting output anywhere that I can find which causes all the tests relying on that function to fail.

I strongly believe that once this function is fixed, all tests will work.

I am continually looking into this but would appreciate any insight from the community as well.

Look forward to merging this.

Also, an unrelated tidbit... I ran into many problems with the dokku-api software not properly handling JSON returned by dokku-daemon for the logs command. I ended up making my own software based on dokku-api with a much simpler feature set and based on NodeJS. It is hosted at https://github.com/dean1012/dokku-api-nodejs

[dean1012]

@josegonzalez Would you look at that? All tests pass!

To recap, this pull request essentially does the following:

• Updates to latest version of Dokku and Ubuntu Bionic
• Updates tests to work better against later version of Dokku
• Replaces nc with a new NodeJS test program I wrote (source included alongside pre-compiled small binary under tests directory). This allows tests to actually run successfully now. Something along the way broke with nc and socat which prevents input/output with the socket from working properly. This interferes with tests. I think what I did will be acceptable here.
• Updates Dokku daemon service files to work more reliably with a larger proportion of operating systems
• Updates Dokku daemon to escape double quotes in addition to new lines. This allows commands like logs myapp to work whereas before they would generate an error. Pull request #18 can be closed as a duplicate of this one as it's featureset is included here.
• Fixes a few misc. issues preventing TravisCI from working and/or passing (such as GPG keys being out of date)

Please merge when able! I am happy I was able to help this project out.

[dean1012]

Added a last minute fix to a corner case bug. Should be good now once the tests pass.

[dean1012]

Give me a little bit of time to make a new commit with requested changes and do some testing.

[dean1012]

All passing and I believe I've addressed all your concerns now @josegonzalez - you can merge now.

[dean1012]

@josegonzalez is there anything else you need me to do here before you can merge? Just checking, thanks!

[dean1012]

Can we please merge this request @josegonzalez ? Thank you!