Install numpy using conda

Dockerfile

@@ -1,14 +1,12 @@
-# Python version can be changed, e.g.
-# FROM python:3.8
-# FROM docker.io/fnndsc/conda:python3.10.2-cuda11.6.0
-FROM docker.io/python:3.10.6-slim-bullseye
+FROM docker.io/fnndsc/conda:python3.10.6
 
 LABEL org.opencontainers.image.authors="FNNDSC <dev@babyMRI.org>" \
       org.opencontainers.image.title="Average Edge Length" \
       org.opencontainers.image.description="Average edge length about each vertex of a surface mesh."
 
 WORKDIR /usr/local/src/pl-obj-avg-edge-length
 
+RUN conda install -c conda-forge numpy=1.22.4
 COPY requirements.txt .
 RUN pip install -r requirements.txt