Replace micromamba with native Python venv

tests/integration/dockerfiles/Dockerfile.slurm

@@ -26,11 +26,6 @@ WORKDIR /home/${USERNAME}
 USER ${USERNAME}
 SHELL ["/bin/bash", "--login", "-c"]
 
-# Install micromamba to manage Python environments
-RUN curl -Ls https://micro.mamba.pm/api/micromamba/linux-64/latest | tar -xvj bin/micromamba
-RUN micromamba shell init --shell bash --root-prefix ~/micromamba
-RUN micromamba create --yes -n jobflow python=3.10 -c conda-forge
-
 # Install jobflow from directory, assuming container
 # is built at the root of the jobflow repo
 RUN mkdir jobflow-remote
@@ -46,9 +41,12 @@ USER root
 RUN sudo chmod -R 0777 jobflow-remote
 USER ${USERNAME}
 
+# Install jobflow in a local native virtualenv
 WORKDIR /home/${USERNAME}/jobflow-remote
 RUN git config --global --add safe.directory /home/${USERNAME}/jobflow-remote
-RUN micromamba run -n jobflow pip install -e .
+RUN python3 -m venv /home/${USERNAME}/.venv
+RUN /home/${USERNAME}/.venv/bin/pip install -U pip
+RUN /home/${USERNAME}/.venv/bin/pip install --verbose -e .
 
 # Make a job directory for jobflow
 WORKDIR /home/${USERNAME}