numpy1.7 deprecation warning when building docker image

[mariojmdavid]

refer to:
https://github.com/indigo-dc/ansible-role-disvis-powerfit/blob/master/dockers/docker-disvis/Dockerfile

I get this when building the docker image, don't know if it will affect later when running

building 'disvis.libdisvis' extension
creating build/temp.linux-x86_64-2.7
creating build/temp.linux-x86_64-2.7/src
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-MW0004/python2.7-2.7.15=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/usr/include/python2.7 -c src/libdisvis.c -o build/temp.linux-x86_64-2.7/src/libdisvis.o -ffast-math
In file included from /usr/lib/python2.7/dist-packages/numpy/core/include/numpy/ndarraytypes.h:1809:0,
from /usr/lib/python2.7/dist-packages/numpy/core/include/numpy/ndarrayobject.h:18,
from /usr/lib/python2.7/dist-packages/numpy/core/include/numpy/arrayobject.h:4,
from src/libdisvis.c:283:
/usr/lib/python2.7/dist-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:15:2: warning: #warning "Using deprecated NumPy API, disable it by " "#defining NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-Wcpp]
#warning "Using deprecated NumPy API, disable it by "
^~~~~~~
In file included from /usr/lib/python2.7/dist-packages/numpy/core/include/numpy/ndarrayobject.h:27:0,
from /usr/lib/python2.7/dist-packages/numpy/core/include/numpy/arrayobject.h:4,
from src/libdisvis.c:283:
/usr/lib/python2.7/dist-packages/numpy/core/include/numpy/__multiarray_api.h:1453:1: warning: '_import_array' defined but not used [-Wunused-function]
_import_array(void)
^~~~~~~~~~~~~