chore: 🔧 add prod Docker compose with sample config

.gitignore

@@ -25,3 +25,7 @@ go.work
 
 # Configuration files
 config.yml
+.env
+
+# Build binary
+listy

config.example.yml

@@ -0,0 +1,8 @@
+spotify:
+  clientId: <SPOTIFY_CLIENT_ID>
+  clientSecret: <SPOTIFY_CLIENT_SECRET>
+server:
+  sessionKey: <RANDOM_STRING_VALUE>
+  # set these values if server is accessed via a domain
+  # scheme: https
+  # host: listy.example.com

docker-compose.yml

@@ -0,0 +1,29 @@
+version: "3.1"
+
+services:
+  mongo:
+    image: mongo
+    restart: always
+    environment:
+      MONGO_INITDB_ROOT_USERNAME: ${MONGO_USERNAME:-listy}
+      MONGO_INITDB_ROOT_PASSWORD: ${MONGO_PASSWORD:-listypass123}
+    ports:
+      - 27017:27017
+    volumes:
+      - ./.mongo:/data/db
+  listy:
+    image: gitea.ravianand.me/Dan6erbond/listy
+    command: ["/listy", "server", "run"]
+    environment:
+      MONGODB_URI: mongodb://${MONGO_USERNAME:-listy}:${MONGO_PASSWORD:-listypass123}@mongodb:27017
+    volumes:
+      - config.example.yml:/etc/listy/config.yml
+    ports:
+      - 5001:5001
+  listy-sync:
+    image: gitea.ravianand.me/Dan6erbond/listy
+    command: ["/listy", "sync", "-r", "5m"]
+    environment:
+      MONGODB_URI: mongodb://${MONGO_USERNAME:-listy}:${MONGO_PASSWORD:-listypass123}@mongodb:27017
+    volumes:
+      - config.example.yml:/etc/listy/config.yml