Update .conda-env.Dockerfile

.conda-env.Dockerfile

@@ -30,7 +30,7 @@ RUN conda-pack -n bayeswave -o /tmp/env.tar && \
 RUN /venv/bin/conda-unpack
   
 ## Next stage
-FROM ubuntu:22.04
+FROM rockylinux/rockylinux:latest
 
 ## Essentials
 RUN yum install -y git which && \