diff --git a/Dockerfile b/Dockerfile
index 138c2d6..1873873 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,12 @@
 FROM condaforge/miniforge3:24.9.2-0
 
+SHELL ["/bin/bash", "-c"]
 ARG APPS_DIR=/usr/local
 RUN conda create -y --name geant --channel=conda-forge geant4 root cmake make
 RUN conda clean --all
 
 ARG VMC_DIR=$APPS_DIR/vmc
-RUN conda init && conda activate geant && \
+RUN conda activate geant && \
     git clone http://github.com/vmc-project/vmc.git $VMC_DIR/git_source && \
     cd $VMC_DIR && \
     git checkout v2-0 && \