fix: added Dockerfile and config to update yarn_gpg_key #1121

Job	Run time
run_ci (ubuntu-latest, 3.11, edx_notes_api+lms)	18m 8s
run_ci (ubuntu-latest, 3.11, ecommerce+lms)	23m 43s
run_ci (ubuntu-latest, 3.11, analyticsapi+insights+lms)	22m 3s
run_ci (ubuntu-latest, 3.11, credentials+lms)	19m 3s
run_ci (ubuntu-latest, 3.11, discovery+lms+forum)	23m 38s
run_ci (ubuntu-latest, 3.11, edx-exams+lms)	19m 19s
run_ci (ubuntu-latest, 3.11, designer+lms)	20m 0s
run_ci (ubuntu-latest, 3.11, xqueue)	2m 2s
run_ci (ubuntu-latest, 3.11, enterprise-subsidy+enterprise-catalog+enterprise-access+lms)	27m 56s
run_ci (ubuntu-latest, 3.11, registrar+lms)	20m 2s
run_ci (ubuntu-latest, 3.11, license-manager+lms)	18m 53s
	3h 34m 47s

Provide feedback