Streamlit + docker not working

Hi,
I´m trying to dockerize an app made with streamlit but I´ve tried for four days so far and nothing has worked for me.
It takes ages to build the image and when I try to run it, it returns: /bin/sh: 1: streamlit: not found .
This is my docker file (This is my first time using docker )

FROM continuumio/miniconda3

ENV LC_ALL=C.UTF-8

ENV LANG=C.UTF-8

RUN mkdir -p /root/.streamlit

RUN bash -c 'echo -e "\

WORKDIR /ModelosComercio

EXPOSE 8501

ADD environment.yml .

RUN conda env create --file environment.yml

CMD streamlit run ModelosStreamlit.py

Any help will be apreciated.

Thanks