add .env file to Podman environment

Author: JunAishima

Dockerfile

@@ -7,6 +7,7 @@ RUN apt-get -y update && \
 
 COPY pixi.toml .
 COPY pixi.lock .
+COPY .env .
 # use `--locked` to ensure the lockfile is up to date with pixi.toml
 RUN pixi install --locked
 # create the shell-hook bash script to activate the environment