AT5-259: Modified mid-project Dockerfile to use latest ska-python images.
Don't start mid-pss-master container. Use a modified mid-cbf-mcs image (tagget as 'test') to run the csp-lmc-mid tests.
Don't start mid-pss-master container. Use a modified mid-cbf-mcs image (tagget as 'test') to run the csp-lmc-mid tests.