Fix environment.yml install in anaconda container

Author: qubitron

containers/python-3-anaconda/.devcontainer/Dockerfile

@@ -14,9 +14,12 @@ RUN apt-get update && apt-get -y install git procps
 # Install any missing dependencies for enhanced language service
 RUN apt-get install -y libicu[0-9][0-9]
 
+RUN mkdir /workspace
+WORKDIR /workspace
+
 # Install Python dependencies from requirements.txt if it exists
 COPY .devcontainer/environment.yml.temp environment.yml* /workspace/
-RUN if [ -f "environment.yml" ]; then conda install environment.yml && rm environment.yml*; fi
+RUN if [ -f "environment.yml" ]; then conda env update base -f environment.yml && rm environment.yml*; fi
 
 # Expose port 5000 as the default web port
 EXPOSE 5000