reorder build steps to ensure julia deps are installed in rmg_env

Author: JacksonBurns

Dockerfile

@@ -28,10 +28,6 @@ RUN wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh &
     rm Miniconda3-latest-Linux-x86_64.sh
 ENV PATH="$PATH:/miniconda/bin"
 
-# Set solver backend to mamba for speed
-RUN conda install -n base conda-libmamba-solver && \
-    conda config --set solver libmamba
-
 # Set Bash as the default shell for following commands
 SHELL ["/bin/bash", "-c"]
 
@@ -44,10 +40,7 @@ RUN git clone --single-branch --branch main --depth 1 https://github.com/Reactio
 
 WORKDIR /rmg/RMG-Py
 # build the conda environment
-RUN conda env create --file environment.yml && \
-    conda install -c conda-forge julia=1.9.1 pyjulia>=0.6 && \
-    conda install -c rmg pyrms diffeqpy && \
-    conda clean --all --yes
+RUN conda env create --file environment.yml
 
 # This runs all subsequent commands inside the rmg_env conda environment
 #
@@ -56,6 +49,10 @@ RUN conda env create --file environment.yml && \
 # in a Dockerfile build script)
 SHELL ["conda", "run", "--no-capture-output", "-n", "rmg_env", "/bin/bash", "-c"]
 
+RUN conda install -c conda-forge julia=1.9.1 pyjulia>=0.6 && \
+    conda install -c rmg pyrms diffeqpy && \
+    conda clean --all --yes
+
 # Set environment variables as directed in the RMG installation instructions
 ENV RUNNER_CWD=/rmg
 ENV PYTHONPATH="$RUNNER_CWD/RMG-Py:$PYTHONPATH"