How to switch/activate the conda env when the jupyterlab startup?

I want activate user's own conda env when jupyterlab start up. So I put conda activate ENVNAMEcommand to .bashrc, but not working.

let's say activate py38_user2 for user2:

user2's bashrc

conda activate py38_user2

personal set up

OS: centos7

Version(s):

jupyter core     : 4.7.1
jupyter-notebook : 6.2.0
qtconsole        : not installed
ipython          : 7.24.1
ipykernel        : 5.5.5
jupyter client   : 6.1.11
jupyter lab      : 3.0.16
nbconvert        : 6.0.7
ipywidgets       : 7.6.3
nbformat         : 5.0.8
traitlets        : 5.0.5

conda env list:

# conda environments:
#
py38_user2                *  /home/user2/.conda/envs/py38_user2
base                               /u01/miniconda3

jupyterhub_config.py

c.Spawner.notebook_dir = '~/notebooks'
c.Spawner.default_url = '/lab'

c.LocalProcessSpawner.shell_cmd = ["bash", "-l", "-c"]
c.Spawner.args = ["--KernelSpecManager.ensure_native_kernel=False"]
c.JupyterHub.spawner_class = 'sudospawner.SudoSpawner'

c.PAMAuthenticator.open_sessions = False
c.LocalAuthenticator.create_system_users = True
c.PAMAuthenticator.add_user_cmd = ['adduser', '-m']

Is there any way to switch/activate the conda environment when the lab startup?

jupyterhub / sudospawner

How to switch/activate the conda env when the jupyterlab startup? #70

personal set up