apk add cmake>3.12-suffix not working on alpine docker - docker

Question

I am trying to install Xgboost on an Alpine docker
I was receiving this message:
CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
CMake 3.12 or higher is required. You are running version 3.9.5
then I added the following line before
RUN apk add cmake>3.12-suffix
# RUN pip install cmake
RUN pip3 install xgboost
and I am still getting the following error message.
What am I doing wrong ?
> Step 16/21 : RUN apk add cmake>3.12-suffix
---> Using cache
---> da84d6ee0868
Step 17/21 : RUN pip3 install xgboost
---> Running in c8e77045ea59
Collecting xgboost
Downloading xgboost-1.0.2.tar.gz (821 kB)
ERROR: Command errored out with exit status 1:
command: /usr/bin/python3.6 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-9m5q6l5k/xgboost/setup.py'"'"';
__file__='"'"'/tmp/pip-install-9m5q6l5k/xgboost/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-install-9m5q6l5k/xgboost/pip-egg-info
cwd: /tmp/pip-install-9m5q6l5k/xgboost/
Complete output (35 lines):
+ pwd
+ oldpath=/tmp/pip-install-9m5q6l5k/xgboost
+ cd ./xgboost/
+ mkdir -p build
+ cd build
+ cmake ..
CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
CMake 3.12 or higher is required. You are running version 3.9.5
-- Configuring incomplete, errors occurred!
+ echo -----------------------------
-----------------------------
+ echo Building multi-thread xgboost failed
Building multi-thread xgboost failed
+ echo Start to build single-thread xgboost
Start to build single-thread xgboost
+ cmake .. -DUSE_OPENMP=0
CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
CMake 3.12 or higher is required. You are running version 3.9.5
-- Configuring incomplete, errors occurred!
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/tmp/pip-install-9m5q6l5k/xgboost/setup.py", line 42, in <module>
LIB_PATH = libpath['find_lib_path']()
File "/tmp/pip-install-9m5q6l5k/xgboost/xgboost/libpath.py", line 50, in find_lib_path
'List of candidates:\n' + ('\n'.join(dll_path)))
XGBoostLibraryNotFound: Cannot find XGBoost Library in the candidate path, did you install compilers and run build.sh in root path?
List of candidates:
/tmp/pip-install-9m5q6l5k/xgboost/xgboost/libxgboost.so
/tmp/pip-install-9m5q6l5k/xgboost/xgboost/../../lib/libxgboost.so
/tmp/pip-install-9m5q6l5k/xgboost/xgboost/./lib/libxgboost.so
/usr/xgboost/libxgboost.so
----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.