updated docker file to latest DAGMC (#3251)

Author: shimwell

Dockerfile

@@ -48,7 +48,7 @@ ENV DD_REPO='https://github.com/pshriwise/double-down'
 ENV DD_INSTALL_DIR=$HOME/Double_down
 
 # DAGMC variables
-ENV DAGMC_BRANCH='v3.2.3'
+ENV DAGMC_BRANCH='v3.2.4'
 ENV DAGMC_REPO='https://github.com/svalinn/DAGMC'
 ENV DAGMC_INSTALL_DIR=$HOME/DAGMC/