Skip installing WEBPROJ into the Docker image

The way it is called does not require the package to be installed in the
Python environment and since it has been causing problems we just skip
that step.

Dockerfile

@@ -1,7 +1,7 @@
 FROM condaforge/miniforge3
 
 # We store PROJ ressources in $WEBPROJ_LIB
-ENV WEBPROJ_LIB /proj
+ENV WEBPROJ_LIB=/proj
 RUN mkdir $WEBPROJ_LIB
 
 # Copy necessary files. Tests and README are needed by setup.py
@@ -19,7 +19,6 @@ RUN apt-get update -y && apt-get upgrade -y
 
 # Set up virtual environment
 RUN conda env create -f environment.yaml
-RUN conda run -n webproj python -m pip install --no-deps .
 
 # Sync PROJ-data files
 RUN conda run -n webproj pyproj sync --source-id dk_sdfe --target-dir $WEBPROJ_LIB