framework: new docker image based on Debian Stretch

[ymartin59]

Motivation: Get recent Meson to build recent fuse for sshfs (synocli-net)

Docker image is far lighter that previous one on Jessie because I discarded most documentation tooling (mainly latex) with --no-install-recommends

[ymartin59]

Mercurial built with that image.

[ymartin59]

@m4tt075 I am interested in feedback about this new docker image - if you may run it for your future local builds (ffmpeg, tvendhead...)

[m4tt075]

Oh yes. And this is most likely what I'd need to meet the CMake 3.1+ dependency in #3575. Unfortunately, I can't use Docker locally and test this, but is there a docker pull command to tell travis to pull this dockerfile instead of from synocommunity/spksrc?

[ymartin59]

I am intrigued about "I can't use Docker locally"... Is there any way I may help about it?

You may use "docker build -t synocommunity/spksrc:stretch - < Dockerfile" command to create image "spksrc:stretch" BUT I hope travis may have some caching mechanism to avoid building that 700 MiB image each time...

[ymartin59]

If I understand well, you run Linux in Virtual Box - so there is no technical reason why you may not install "docker" package in your Linux distribution to test that image.

[ymartin59]

... ffmpeg is building - I guess it means a "OK" for this image ... but I guess I have to request @Diaoul for grants to push a new image into Docker Hub.

[m4tt075]

@ymartin59 I tried to install docker locally some time ago, but it would have required me to change BIOS options that I use for VirtualBox. I've been reluctant to do that so far. I'll maybe try again in the future. My interest yesterday was to point travis at your image. If I understood correctly, for that it needs to be registered on some server though. To that extent, it would be phantastic if @Diaoul could grant you the permission to push it into the hub...

[Diaoul]

I'll look into it this evening.

[Diaoul]

If this gets merged the image will automatically be published on Docker Hub as it is an automated build. Do you need both images?

[ymartin59]

If there is a way to tag current "jessie", we may keep access to it from Travis. By the way I can rebuild it for local use. Thank you for help. Yves

[Diaoul]

It seems it's not possible to tag from Docker Hub. Give me your Docker id here or by email, I'll grant you permission.