Update README.md on docker selfhost commands (#42)

* update README docker commands

* update README.md and docker-compose.yml reg user permissions.

* Note on deno user id

* add comment to `mkdir` and EOF diff fix

README.md

@@ -19,8 +19,10 @@ Or on your own machine:
 Download/copy [`docker-compose.yml`](/docker-compose.yml) and [`.env.sample`](/.env.sample) as `.env`.
 
 ```sh
-$ docker compose up # makes the app available at http://localhost:8000
-$ docker compose run website bash -c "cd /app && make migrate-db" # initializes/updates the database (only needs to be executed the first time and on any updates)
+$ mkdir data-files #  local directory for storing user-uploaded files
+$ chown -R 1993:1993 data-files # solves permission related issues
+$ docker compose up -d # makes the app available at http://localhost:8000
+$ docker compose run --rm website bash -c "cd /app && make migrate-db" # initializes/updates the database (only needs to be executed the first time and on any updates)
 ```
 
 Alternatively, check the [Development section below](#development).
@@ -28,6 +30,9 @@ Alternatively, check the [Development section below](#development).
 > [!IMPORTANT]
 > Even with signups disabled (`CONFIG_ALLOW_SIGNUPS="false"`), the first signup will work and become an admin.
 
+> [!NOTE]
+> `1993:1993` comes from deno's [docker image](https://github.com/denoland/deno_docker/blob/2abfe921484bdc79d11c7187a9d7b59537457c31/ubuntu.dockerfile#L20-L22) where `1993` is the default user id in it.
+
 ## Development
 
 ### Requirements

docker-compose.yml

@@ -5,7 +5,6 @@ services:
     ports:
       - 127.0.0.1:8000:8000
     mem_limit: '256m'
-    user: '${UID}:${GID}' # if you run into issues with permissions for the data-files volume below, see other options at https://stackoverflow.com/a/56904335
     env_file:
       - path: .env
         required: true