Switching deprecated types and adding cors headers to dockerfile #1654

Job	Run time
setup-matrix	11s
run-integration-tests (./examples/datasource-streaming-websocket/streaming-websocket-plugin)	25s
run-integration-tests (./examples/datasource-http)	26s
run-integration-tests (./examples/datasource-streaming-backend-websocket/streaming-backend-websoc...	24s
run-integration-tests (./examples/app-with-dashboards)	26s
run-integration-tests (./examples/datasource-basic)	26s
run-integration-tests (./examples/app-with-backend)	28s
run-integration-tests (./examples/app-with-extensions)	27s
run-integration-tests (./examples/app-with-scenes)	27s
run-integration-tests (./examples/app-with-service-account)	26s
run-integration-tests (./examples/panel-frame-select)	25s
run-integration-tests (./examples/datasource-http-backend)	27s
run-integration-tests (./examples/app-with-rbac)	26s
run-integration-tests (./examples/app-basic)	27s
run-integration-tests (./examples/panel-datalinks)	25s
run-integration-tests (./examples/panel-basic)	26s
run-integration-tests (./examples/app-with-extension-point)	27s
run-integration-tests (./examples/datasource-logs)	26s
notify	1s
	7m 36s

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