Fix/uppsf 666 docker image update

[gkazakov111]

No description provided.

[mitagg]

Please change the content in the PanicGuide with some relevant information.

[karsov]

The Dockerfile does not look OK.
The service is not released to dev and therefore not tested if it works.
Let's also add a "__build-info" endpoint. I think we should add the following line after line 96 in "synth-publish.go"

http.HandleFunc(httphandlers.BuildInfoPath, httphandlers.BuildInfoHandler)

[mitagg]

We can also add a badge for the go report card

[mitagg]

@gkazakov111 with the current Docker file the start.sh script won't find the required files.

[MiroslavGatsanoga]

Please squash the commits before merging.

[karsov]

synthetic-image-publication-monitor-6b486d58b7-rts7v synthetic-image-publication-monitor 2020/05/15 13:40:58 cmdR.Run() failed with exec: "kubectl": executable file not found in $PATH

Updated

[karsov]

Seems to be OK now, however I'd recommend to watch for some time to see if the kubectl logic works.
I can't brake the publish in a way that triggers it ( https://github.com/Financial-Times/coco-synthetic-image-publication-monitor/blob/master/synth-publish.go#L236 )