jupyterLabでpd.read_clipboard()使えない Pyperclip could not find a copy/paste mechanism for your system.

Question

DockerでjupyterLabを起動させて動かしていたのですが、

import pandas as pd
df_cb = pd.read_clipboard()

を実行すると以下のようなエラーになります。

---------------------------------------------------------------------------
PyperclipException                        Traceback (most recent call last)
<ipython-input-30-8402c54dd3da> in <module>
      1 # data.csvをコピー
----> 2 df_cb = pd.read_clipboard()

/opt/conda/lib/python3.8/site-packages/pandas/io/clipboards.py in read_clipboard(sep, **kwargs)
     36     from pandas.io.parsers import read_csv
     37 
---> 38     text = clipboard_get()
     39 
     40     # Try to decode (if needed, as "text" might already be a string here).

/opt/conda/lib/python3.8/site-packages/pandas/io/clipboard/__init__.py in lazy_load_stub_paste()
    647     global copy, paste
    648     copy, paste = determine_clipboard()
--> 649     return paste()
    650 
    651 

/opt/conda/lib/python3.8/site-packages/pandas/io/clipboard/__init__.py in __call__(self, *args, **kwargs)
    285     class ClipboardUnavailable:
    286         def __call__(self, *args, **kwargs):
--> 287             raise PyperclipException(EXCEPT_MSG)
    288 
    289         def __bool__(self) -> bool:

PyperclipException: 
    Pyperclip could not find a copy/paste mechanism for your system.
    For more information, please visit
    https://pyperclip.readthedocs.io/en/latest/introduction.html#not-implemented-error
    

調べてみると、このような記事に辿り着きました。
そして、RUN apt-get install xsel xclipを実行しインストールを試みたのですが、パッケージが見つからないと言われてしまいます・・・

Step 3/5 : RUN apt-get install xsel xclip
 ---> Running in 2aebe3eddfa5
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package xsel
E: Unable to locate package xclip
ERROR: Service 'notebook' failed to build : The command '/bin/bash -o pipefail -c apt-get install xsel xclip' returned a non-zero code: 100

解決方法を教えて下さい。