documentations base: pdm-api pointed DRAWINGS_INTERNAL_URL at
drawings-api-service:80, which does not exist in the clusters inheriting
base (vad, d8-ugmk-prod, sarex-contour, uralkal, yc-k8s-test); their drawings
service is backend-service:8000. brusnika and wb keep their own pdm copies.
istio-config uralkal: /notes/api/ -> backend-service.notes:8000 (rewrite
/api/) and /notes/static/ -> frontend-service.notes:80.
notes base frontend image -> notes-frontend:contour_5ff34172.
