chore: revert changes

docs/reference/cli-commands/run.md

@@ -1,7 +1,7 @@
 (reference_pebble_run_command)=
-# run command
+# Pebble run command
 
-The run command starts Pebble and runs the configured environment.
+The `run` command starts Pebble daemon and runs the configured environment.
 
 ## Usage
 
@@ -28,3 +28,62 @@ pebble run --args myservice --port 8080 \; --hold
           --args=        Provide additional arguments to a service
 ```
 <!-- END AUTOMATED OUTPUT -->
+
+## How it works
+
+`pebble run` will start the Pebble daemon itself, as well as start all the services that are marked as `startup: enabled` in the layer configuration (if you don't want that, use `--hold`). For more detail on layer configuration, see [Layer specification](../layer-specification.md).
+
+After the Pebble daemon starts, other Pebble commands may be used to interact with the running daemon, for example, in another terminal window.
+
+## Arguments
+
+To provide additional arguments to a service, use `--args <service> <args> ...`. If the `command` field in the service's plan has a `[ <default-arguments...> ]` list, the `--args` arguments will replace the defaults. If not, they will be appended to the command.
+
+To indicate the end of an `--args` list, use a `;` (semicolon) terminator, which must be backslash-escaped if used in the shell. The terminator may be omitted if there are no other Pebble options that follow.
+
+## Examples
+
+If Pebble is installed and the `$PEBBLE` directory is set up, run the daemon by:
+
+```{terminal}
+ :input: pebble run
+2022-10-26T01:18:26.904Z [pebble] Started daemon.
+2022-10-26T01:18:26.921Z [pebble] POST /v1/services 15.53132ms 202
+2022-10-26T01:18:26.921Z [pebble] Started default services with change 50.
+2022-10-26T01:18:26.936Z [pebble] Service "srv1" starting: sleep 300
+```
+
+### Run the daemon with arguments
+
+To start the daemon and pass additional arguments to "myservice", run:
+
+```bash
+pebble run --args myservice --verbose --foo "multi str arg"
+```
+
+To use args terminator to pass `--hold` to Pebble at the end of the line, run:
+
+```bash
+pebble run --args myservice --verbose \; --hold
+```
+
+To start the daemon and pass arguments to multiple services, run:
+
+```bash
+pebble run --args myservice1 --arg1 \; --args myservice2 --arg2
+```
+
+### Override the default configuration directory
+
+To override the default configuration directory, set the `PEBBLE` environment variable first then run the daemon:
+
+```bash
+export PEBBLE=~/pebble
+pebble run
+```
+
+### Initialise the `$PEBBLE` directory with a one-time copy
+
+To initialise the `$PEBBLE` directory with the contents of another, in a one-time copy, set the `PEBBLE_COPY_ONCE` environment variable to the source directory.
+
+This will only copy the contents if the target directory, `$PEBBLE`, is empty.