fix Dockerfile

Dockerfile

@@ -1,7 +1,5 @@
 FROM jupyter/base-notebook:latest
 
-ARG GITHUB_TOKEN
-
 RUN mamba install -c conda-forge leafmap geopandas localtileserver -y && \
     fix-permissions "${CONDA_DIR}" && \
     fix-permissions "/home/${NB_USER}"
@@ -9,8 +7,9 @@ RUN mamba install -c conda-forge leafmap geopandas localtileserver -y && \
 USER root
 RUN apt-get update && apt-get install -y git && rm -rf /var/lib/apt/lists/*
 RUN conda install -c conda-forge gdal
-RUN pip install git+https://${GITHUB_TOKEN}@github.com/saferplaces/dcascade_py.git@test_no_click
-RUN pip install keplergl
+
+RUN --mount=type=secret,id=GITHUB_TOKEN,mode=0444,required=true \
+ pip install git+https://${GITHUB_TOKEN}@github.com/saferplaces/dcascade_py.git@test_no_click
 COPY requirements.txt .
 RUN pip install -r requirements.txt