updates README with new Podman instructions

README.md

@@ -10,17 +10,35 @@ Structure:
 └── infrastructure: The infrastructure of my website as code
 ```
 
-## Running
+## Running with Podman
 
-To run with Docker or Podman:
+These instructions will probably work with Docker, too: just substitute `podman`
+for `docker` in all the commands.
+
+To run with Podman, first set up your environment variables. Copy `example.env`
+to `.env` and edit the values accordingly.
+
+Then, create the `remote_smtp_password` secret, storing the password for the
+remote SMTP server which will send the contact emails on behalf of the website.
 
 ```bash
-docker build -t joeac-net .
-docker run joeac-net [port]:4321
+sudo podman secret create remote_smtp_password /path/to/remote/smtp/password
 ```
 
-To run with Node:
+Now build and start the containers:
+
+```bash
+sudo podman-compose build && sudo podman-compose up -d
+```
+
+## Running on the host machine
+
+To run on the host machine, first, as before, set up your environment variables
+by copying `example.env` to `.env` and editing the values as appropriate.
 
 ```bash
 npm run start
 ```
+
+Note that emails may not work locally without further setup. These instructions
+are of course woefully incomplete.