watch-serve: Remove containers after use

Add the `--rm` flag to automatically delete the containers after they
have been used. The script won't restart existing containers anyways, so
there is no point in keeping them. It will only fill up the users disk.

watch-serve.sh

@@ -19,14 +19,14 @@ if $(_exists podman); then
     echo "Using '$CRT' as container runtime"
 
     $CRT build --tag "$CONTAINER_NAME" -f Containerfile
-    $CRT run --userns keep-id --user "$(id -u):$(id -g)" -v "$PWD:$PWD:z" -w "$PWD" -p 1313:1313 $CONTAINER_NAME
+    $CRT run --rm -it --userns keep-id --user "$(id -u):$(id -g)" -v "$PWD:$PWD:z" -w "$PWD" -p 1313:1313 $CONTAINER_NAME
 
 elif $(_exists docker); then
     CRT="$(which docker)"
     echo "Using '$CRT' as container runtime"
 
     $CRT build --tag "$CONTAINER_NAME" <Containerfile
-    $CRT run --user "$(id -u):$(id -g)" -v "$PWD:$PWD" -w "$PWD" -p 1313:1313 $CONTAINER_NAME
+    $CRT run --rm -it --user "$(id -u):$(id -g)" -v "$PWD:$PWD" -w "$PWD" -p 1313:1313 $CONTAINER_NAME
 
 else
     echo "You must have installed either of:"