Configuration overrides from environment variables (CELL_BACKEND__SERVER__PORT=8080 → cell.server.port).
CELL_BACKEND__SERVER__PORT=8080
cell.server.port
shadows: the key under cell with the same first name that the variable does not set (reach it with CELL_<TARGET>__CELL__...).
shadows
cell
CELL_<TARGET>__CELL__...
Variables with the prefix that match no key or whose value does not fit the key's type.
Configuration overrides from environment variables (
CELL_BACKEND__SERVER__PORT=8080→cell.server.port).