ssh keys not persisting in ssh-agent between sessions

[capsulecorplab]

Restarting kasm requires rerunning ssh-add ~/.ssh/id_ed25519. Otherwise, ssh keys don't work

[j-simmons-phd]

Use Keychain (already installed in the image) per the following instructions

Create New SSH Key

$ ssh-keygen -t ed25519 -C "simmons@j-dot.org"
# follow prompts and set a password

Add new SSH Key to SSH-Agent

$ eval "$(ssh-agent -s)"
> Agent pid 59566
$ ssh-add ~/.ssh/id_ed25519

Add new SSH Key to GitHub

$ cat ~/.ssh/id_ed25519.pub
# Then select and copy the contents of the id_ed25519.pub file
# displayed in the terminal to your clipboard

1. Go to Settings->SSH and GPG keys in Github
2. Click New SSH key or Add SSH key
3. Enter title and copy/paste the key from the command above, then click Add SSH Key
4. Verify access with following commands

   $ ssh -T git@github.com
   # Attempts to ssh to GitHub
   > The authenticity of host 'github.com (IP ADDRESS)' can't be established.
   > RSA key fingerprint is SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8.
   > Are you sure you want to continue connecting (yes/no)?
   # answer yes
   > Hi username! You've successfully authenticated, but GitHub does not
   > provide shell access.

Set Keychain to auto-launch

$ sudo apt install keychain  # installed in the kasm image already
# add the following to ~/.bashrc (~/.profile in kasm images)
# also set terminal preferences to launch as login shell in kasm
# eval `keychain --eval id_ed25519`
$ source ~/.bashrc