How to invoke 'build' target of nrf52_dk?

When I try to run the command below to build, I am getting an error. What am I doing wrong?

pio run --target build
PS C:\Users\user\Documents\PlatformIO\Projects\kaka50> pio run --target build
Processing nrf52_dk (platform: nordicnrf52; board: nrf52_dk; framework: zephyr)
-------------------------------------------------------------------------------------------------------------------------------------------------Verbose mode can be enabled via `-v, --verbose` option
PLATFORM: Nordic nRF52 (9.3.0) > Nordic nRF52-DK
HARDWARE: NRF52832 64MHz, 64KB RAM, 512KB Flash
DEBUG: Current (jlink) On-board (cmsis-dap, jlink) External (blackmagic, stlink)
 - framework-zephyr 2.20701.220216 (2.7.1)
 - tool-cmake 3.21.3
 - tool-dtc 1.4.7
 - tool-ninja 1.9.0
 - tool-sreccat 1.164.0 (1.64)
 - toolchain-gccarmnoneeabi 1.80201.190214 (8.2.1)
LDF: Library Dependency Finder ->
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 0 compatible libraries
Scanning dependencies...
No dependencies
Building in release mode
*** Do not know how to make File target `build' (C:\Users\user\Documents\PlatformIO\Projects\kaka50\build).  Stop.


platform = nordicnrf52
board = nrf52_dk
framework = zephyr
debug_tool = jlink
build_flags =
  -I .pio/build/nrf52_dk/zephyr/include/generated
platform_packages =


Build is special, just pio run.

Thanks @maxgerhardt, it works.

For whoever owns the documentation, may be useful to mention here that pio run always starts with building, regardless of the specified targets pio run — PlatformIO latest documentation