🔧 Update .travis.yml to manage docker build

[VonOx]

So i have managed to build docker image with several tag:

• latest ( on master branch )
• major version ( on release/tag )

Image is pushed to DockerHub

You need to set env variable in Travis and disable automatic build in docker hub:

• DOCKER_PASSWORD
• DOCKER_USERNAME

⚠️ Complete build need to be tested ( with documentation )

Performance: added yarn cache to speed up installation of deps

[VonOx]

Automatic Build need to be disabled in DockerHub

[Pierre-Gilles]

Hey!

Thanks for your PR :)

Why do you have to repeat your steps for all version of Node.js ? It feels hacky, isn't that possible to have only one step with all versions?

Just a little feedback, from what I've seen in the industry, it's more common to have a Docker tag for each major version.

Example:

• Docker node docker pull node:8 / docker pull node:6
• Docker Nginx docker pull nginx:1

Because if we switch to Gladys v4 with breaking changes, it will breaks everyone using this. A "stable" doesn't work!

Can you switch to a tag by major version ? (you split the version by "." and take only the first number)

[VonOx]

Why do you have to repeat your steps for all version of Node.js ? It feels hacky, isn't that possible to have only one step with all versions?

Need some experiment.

Can you switch to a tag by major version ? (you split the version by "." and take only the first number)

Yep.

[VonOx]

https://hub.docker.com/r/vonox/gladys/tags/
https://travis-ci.org/VonOx/Gladys-trytravis/jobs/433717903

Tested on release/tag for major V4.

Also added cache: yarn to test stage for performance.

[Pierre-Gilles]

Really great job, it works nice! I love the multi-stage view on Travis :)

👏 👏 👏 👏