diff --git a/README.md b/README.md
index 12ae810..17b208e 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,56 @@
 * Easy to Use: Cannery lets you easily keep an eye on your ammo levels before and after range day
 * Secure: Self-host your own instance, or use an instance from someone you trust.
 * Simple: Access from any internet-capable device
+
+# Features
+
+- User Registration/Sign in via `phx_gen_auth`
+- `Dockerfile` and example `docker-compose.yml`
+- Automatic migrations in `MIX_ENV=prod` or Docker image
+- JS linting with [standard.js](https://standardjs.com), HEEx linting with
+  [heex_formatter](https://github.com/feliperenan/heex_formatter)
+- Customizable invite tokens or public registration via `REGISTRATION`
+  environment variable.
+
+# Installation
+
+1. Install [Docker Compose](https://docs.docker.com/compose/install/) or alternatively [Docker Desktop](https://docs.docker.com/desktop/) on your machine.
+1. Copy the example `docker-compose.yml` into your local machine where you want
+
+# Local Development
+
+1. Clone the repo
+2. Run `mix setup`
+3. Run `mix phx.server` to start the development server
+
+# Configuration
+
+For development, I recommend setting environment variables with [direnv](https://direnv.net).
+
+## `MIX_ENV=dev`
+
+In `dev` mode, Cannery will listen for these environment variables on compile.
+
+- `HOST`: External url to generate links with. Set these especially if you're
+  behind a reverse proxy. Defaults to `localhost`.
+- `PORT`: External port for urls. Defaults to `443`.
+- `DATABASE_URL`: Controls the database url to connect to. Defaults to
+  `ecto://postgres:postgres@localhost/cannery_dev`.
+- `REGISTRATION`: Controls if user sign-up should be invite only or set to public. Set to `public` to enable public registration. Defaults to `invite`.
+
+## `MIX_ENV=prod`
+
+In `prod` mode (or in the Docker container), Cannery will listen for these environment variables at runtime.
+
+- `HOST`: External url to generate links with. Set these especially if you're
+  behind a reverse proxy. Defaults to `localhost`.
+- `PORT`: Internal port to bind to. Defaults to `4000` and attempts to bind to
+  `0.0.0.0`. Must be reverse proxied!
+- `DATABASE_URL`: Controls the database url to connect to. Defaults to
+  `ecto://postgres:postgres@cannery-db/cannery`.
+- `ECTO_IPV6`: Controls if Ecto should use ipv6 to connect to PostgreSQL.
+  Defaults to `false`.
+- `POOL_SIZE`: Controls the pool size to use with PostgreSQL. Defaults to `10`.
+- `SECRET_KEY_BASE`: Secret key base used to sign cookies. Must be generated
+  with `mix phx.gen.secret` and set for server to start.
+- `REGISTRATION`: Controls if user sign-up should be invite only or set to public. Set to `public` to enable public registration. Defaults to `invite`.
diff --git a/docker-compose.yml b/docker-compose.yml
index 6aebcae..e3a3e8b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,28 +5,26 @@ services:
     build:
       context: .
     container_name: cannery
-    environment:
-      HOST: "your.domain.com"
-      DATABASE_URL: "ecto://postgres:postgres@cannery-db/cannery"
-      # generate a random base64 string 64 characters long, preferably not from a website
-      SECRET_KEY_BASE: "change-me-to-something-random-this-is-really-important-change-it"
-      # uncomment to enable sign ups, watch for spam!
-      # REGISTRATION: "public"
-    ports:
-      # do not expose this publically!
-      # always host from behind a reverse proxy with a properly configured certificate
-      - "80:80"
     restart: always
+    environment:
+      - HOST="your.domain.com"
+      - DATABASE_URL="ecto://postgres:postgres@cannery-db/cannery"
+      # generate a random base64 string 64 characters long, preferably not from a website
+      - SECRET_KEY_BASE="change-me-to-something-random-this-is-really-important-change-it"
+      # uncomment to enable sign ups, watch for spam!
+      - REGISTRATION="public"
+    expose:
+      - "80"
     depends_on:
       - cannery-db
 
   cannery-db:
-    image: postgres:9.6
+    image: postgres:13
     container_name: cannery-db
     environment:
-      POSTGRES_USER: postgres
-      POSTGRES_PASSWORD: postgres
-      POSTGRES_DB: cannery
+      - POSTGRES_USER="postgres"
+      - POSTGRES_PASSWORD="postgres"
+      - POSTGRES_DB="cannery"
     restart: always
     volumes:
-      - ./data:/var/lib/postgresql/data
\ No newline at end of file
+      - ./data:/var/lib/postgresql/data