If you are behind a NAT and don't have an public IP you can get the certificate using Tailscale. You can run the command tailscale cert
https://tailscale.com/blog/caddy/
https://tailscale.com/kb/1153/enabling-https/
greenart7c3
npub1w4…d0jr5
2023-02-17 08:08:24
in reply to nevent1q…m57s
Author Public Key
npub1w4uswmv6lu9yel005l3qgheysmr7tk9uvwluddznju3nuxalevvs2d0jr5Published at
2023-02-17 08:08:24Event JSON
{
"id": "3c6f698ee2a05502ca67ad8c8ca9d86b336409aa0a87ed2233a6ec5d10c9bdbd",
"pubkey": "7579076d9aff0a4cfdefa7e2045f2486c7e5d8bc63bfc6b45397233e1bbfcb19",
"created_at": 1676621304,
"kind": 1,
"tags": [
[
"e",
"9cb3252352c569ab0e856f93de8de93f13cb3b867649c0ccf787f0396676ff9a"
],
[
"e",
"3121b76ad543a40aa8e81d51137a74a4a62fb21b03304281c581a3134864ca92"
],
[
"e",
"429cdef4aaf3cbd84355c0b0bb609bb7c285378e9f7c25cf6d526765456af532"
],
[
"p",
"13883e40ec1b1940a655fa776ad5d337656a68767968598388148b977e56550f"
],
[
"p",
"13883e40ec1b1940a655fa776ad5d337656a68767968598388148b977e56550f"
],
[
"p",
"0000000033f569c7069cdec575ca000591a31831ebb68de20ed9fb783e3fc287"
]
],
"content": "If you are behind a NAT and don't have an public IP you can get the certificate using Tailscale. You can run the command tailscale cert\n\nhttps://tailscale.com/blog/caddy/\n\nhttps://tailscale.com/kb/1153/enabling-https/",
"sig": "f35d81aabd23e2198b6f49deadb0a8213885446cc2e11f3545f1719a97b3af6c2d93ff9c854fd22580cf33e34a6553f5a394baae53d05488bffdb2205c5f176e"
}