Feature: Add version label to be able to find version from image

[glensc]

Add org.opencontainers.image.version label, from docker best practices:

• https://www.docker.com/blog/docker-best-practices-using-tags-and-labels-to-manage-docker-image-sprawl/

Example:

$ docker inspect ghcr.io/taxel/plextraktsync:latest | jq -r '.[].Config.Labels["org.opencontainers.image.version"]'
0.34.5

[tananaev]

Not sure I understand the problem is solves. Can you elaborate.

[glensc]

I want to query programmatically what is the version of the image: traccar/traccar:latest

Example:

$ docker inspect ghcr.io/taxel/plextraktsync:latest | jq -r '.[].Config.Labels["org.opencontainers.image.version"]'
0.34.5

[tananaev]

You can use Traccar API for that.

[magna-z]

org.opencontainers.image.* labels is a good practice.
Added in #150 with remove build step on master branch: https://github.com/traccar/traccar-docker/pull/150/files#diff-ff6530072f2ee96cab1b3a1bd86c4db4afa00ae564f6484789969129711495aeL36-L38