Merge pull request 'docs(en): Bitwarden admin token guide' (#27) from bitwarden-admin into master

Reviewed-on: https://git.selfprivacy.org/SelfPrivacy/selfprivacy.org/pulls/27

content/en/docs/Services/bitwarden.md

@@ -7,4 +7,45 @@ description: >
 
 {{% pageinfo %}}
 This article is a stub. More information will be added soon.
-{{% /pageinfo %}}
+{{% /pageinfo %}}
+
+## Setting an admin token manually
+
+First, make sure your system config is up to date. You may click "upgrade server" in the app and wait for a couple of minutes, or run the following command in the terminal:
+
+```bash
+cd /etc/nixos
+git pull
+```
+
+Then, we have to generate an admin token. Run the following:
+
+```bash
+nix-shell -p openssl --run 'openssl rand -base64 48'
+```
+
+It will output a string like this:
+
+```
+47pFSgYBbS0G0vCG63nX1yyblzgNaqZ40bNuJnwq2hvOy8ABfe+iHRfBeXlfrRdJ
+```
+
+This will be a password to your admin account. Copy it and paste it somewhere safe. To set it, we will run the following, replacing `PASSWORD` with the password you just generated:
+
+```bash
+jq '.bitwarden.adminToken = "PASSWORD"' /etc/nixos/userdata/userdata.json > /etc/nixos/userdata/userdata.json.new && mv /etc/nixos/userdata/userdata.json.new /etc/nixos/userdata/userdata.json
+```
+
+Now, we have to apply the changes:
+
+```bash
+nixos-rebuild switch
+```
+
+And after rebuilding the system, restart Bitwarden:
+
+```bash
+systemctl restart vaultwarden
+```
+
+Now, your admin interface is available on `https://password.YOUR.DOMAIN/admin`.