Add exiftool dependency for geo-module

[mtiessen1175]

Since the native PHP-exiftool functions do not support all file-formats (see here), the use of exiftool would be helpful for extracting more specific metadata, like GeoTIFF-tags. Exiftool might also be helpful for metadata-extraction from videos #462.

Tasks:

• Adding the exiftool dependency to the app & worker docker-containers.

[mzur]

This is related to biigle/geo#44.

[mzur]

Looks good now 👍 This will be merged together with the biigle/geo pull request that actually implements the GeoTIFF feature. Please be sure to link this PR there, too.

[mzur]

Why do you need proj4php here? Can't you add it to the composer.json of biigle/geo?

[mtiessen1175]

Why do you need proj4php here? Can't you add it to the composer.json of biigle/geo?

Yes, you're right it will only be used in the geo-module. I did not think about this properly when I installed it into core previously.

[mzur]

Please remove the storage disk configuration again, as the module is not installed by default. You can open a PR with the disk configuration to the dev-modules branch once this is merged.

[mtiessen1175]

Please remove the storage disk configuration again, as the module is not installed by default. You can open a PR with the disk configuration to the dev-modules branch once this is merged.

That makes sense! I removed it.