Empty version string in server image

[jarkenau]

Starting the server image with docker compose produces the following output:

...
seerep_server           | [2024-07-11 13:40:00.861233]<info>: SEEREP version: N/A
...

This happens because only the source files are copied in the Dockerfile, and no Git information is included:

seerep/docker/server/Dockerfile

Lines 9 to 16 in 04caf0a

	COPY certs src/certs/
	COPY seerep_com src/seerep_com/
	COPY seerep_hdf5 src/seerep_hdf5/
	COPY seerep_msgs src/seerep_msgs/
	COPY seerep_ros src/seerep_ros/
	COPY seerep_srv src/seerep_srv/
	COPY examples src/examples/
	COPY docker/server/start_server.sh src/start_server.sh

For tagged images, e.g (ghcr.io/agri-gaia/seerep_server:0.2.5), we should include the tag and for latest image, we could simply use latest. However, I’m not sure about the approach for implementing this.