Thanks a lot for the suppport.
The host of the docker image is Ubuntu 20.04 on x86_64 architecture.
In addition, I use the variable GST_PLUGIN_PATH to set where the plugin is located. Plugin is detected and working. This is the log that is generated with gstreamer using: GST_DEBUG=2,thetauvcsrc:6
0:00:00.688153989 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:208:gst_thetauvcsrc_set_property:<thetauvcsrc0> set_property
0:00:00.688169165 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:208:gst_thetauvcsrc_set_property:<thetauvcsrc0> set_property
Setting pipeline to PAUSED ...
0:00:00.689459545 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:672:gst_thetauvcsrc_query:<thetauvcsrc0> query
0:00:00.689466171 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:684:gst_thetauvcsrc_query:<thetauvcsrc0> query CAPS
0:00:00.689476892 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:672:gst_thetauvcsrc_query:<thetauvcsrc0> query
0:00:00.689479785 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:684:gst_thetauvcsrc_query:<thetauvcsrc0> query CAPS
0:00:00.689487561 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:672:gst_thetauvcsrc_query:<thetauvcsrc0> query
0:00:00.689489383 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:684:gst_thetauvcsrc_query:<thetauvcsrc0> query CAPS
0:00:00.689498710 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:672:gst_thetauvcsrc_query:<thetauvcsrc0> query
0:00:00.689500063 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:684:gst_thetauvcsrc_query:<thetauvcsrc0> query CAPS
0:00:00.690952410 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:448:gst_thetauvcsrc_start:<thetauvcsrc0> start
0:00:00.690960576 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:449:gst_thetauvcsrc_start:<thetauvcsrc0> dev=-1 mode=0
0:00:00.760036006 8 0x55dc6da40c00 WARN thetauvcsrc gstthetauvcsrc.c:493:gst_thetauvcsrc_start:<thetauvcsrc0> error: Found 1 Theta(s), but none available (No such device).
0:00:00.760414751 8 0x55dc6da40c00 WARN basesrc gstbasesrc.c:3468:gst_base_src_start:<thetauvcsrc0> error: Failed to start
0:00:00.760480896 8 0x55dc6da40c00 WARN basesrc gstbasesrc.c:3824:gst_base_src_activate_push:<thetauvcsrc0> Failed to start in push mode
0:00:00.760501442 8 0x55dc6da40c00 WARN GST_PADS gstpad.c:1142:gst_pad_set_active:<thetauvcsrc0:src> Failed to activate pad
ERROR: Pipeline doesn't want to pause.
Setting pipeline to NULL ...
ERROR: from element /GstPipeline:pipeline0/GstThetauvcsrc:thetauvcsrc0: Found 1 Theta(s), but none available (No such device).
Additional debug info:
gstthetauvcsrc.c(493): gst_thetauvcsrc_start (): /GstPipeline:pipeline0/GstThetauvcsrc:thetauvcsrc0
Freeing pipeline ...
0:00:00.761629738 8 0x55dc6da40c00 DEBUG thetauvcsrc gstthetauvcsrc.c:270:gst_thetauvcsrc_finalize:<thetauvcsrc0> finalize
KR,
Juan