Add nonroot user for conda install

Dockerfile

@@ -4,12 +4,16 @@ ENV PATH=/opt/conda/envs/bact_seq-1.0.0/bin:$PATH
 ENV LC_ALL=C.UTF-8
 ENV LANG=C.UTF-8
 
+RUN useradd -m -s /bin/bash nextflow_user
+USER nextflow_user
+WORKDIR /home/nextflow_user
+
 RUN echo ". /opt/conda/etc/profile.d/conda.sh" >> ~/.bashrc && \
     echo "source activate bact_seq-1.0.0" >> ~/.bashrc && \
     git clone https://github.com/adamd3/BactSeq.git && \
     /opt/conda/bin/conda env create -f BactSeq/environment.yml && \
     rm -rf BactSeq
 
-ENTRYPOINT ["bash", "-c"]
+ENTRYPOINT ["/bin/bash", "-l", "-c"]
 
-CMD ["exec \"$@\""]
+CMD ["bash"]