diff --git a/.env.sample b/.env.sample
index e5f8548..68fa565 100644
--- a/.env.sample
+++ b/.env.sample
@@ -3,11 +3,16 @@ DATABASE_PORT=5432
 REDIS_PORT=6379
 ADMINER_PORT=8080
 DATA_FOLDER=./data
-
-# Change this to your local game folder
 GAME_FOLDER=/res
 
 # Postgres specific setup
 POSTGRES_USER=uchu
 POSTGRES_PASSWORD=uchu
-POSTGRES_DB=uchu
\ No newline at end of file
+POSTGRES_DB=uchu
+
+# Uchu specific setup
+CHARACTER_PORT=2002
+API_PORT=10000
+MAX_WORLD_SERVERS=100
+# Should be API_PORT + MAX_WORLD_SERVERS
+MAX_API_PORT=10100
\ No newline at end of file
diff --git a/Uchu.Dockerfile b/Uchu.Dockerfile
index fbbdf63..625afb2 100644
--- a/Uchu.Dockerfile
+++ b/Uchu.Dockerfile
@@ -3,6 +3,7 @@ COPY Uchu config.default.xml .env ./
 
 RUN apk add gettext
 RUN set -o allexport && source .env && set +o allexport && envsubst < config.default.xml > config.xml
+RUN cat config.xml
 RUN dotnet build
 
 ENTRYPOINT ["dotnet", "Uchu.Master/bin/Debug/netcoreapp3.1/Uchu.Master.dll"]
\ No newline at end of file
diff --git a/config.default.xml b/config.default.xml
index f810d98..b1d3ae7 100644
--- a/config.default.xml
+++ b/config.default.xml
@@ -28,10 +28,10 @@
   <Networking>
     <Certificate />
     <Hostname />
-    <CharacterPort>2002</CharacterPort>
+    <CharacterPort>$CHARACTER_PORT</CharacterPort>
     <HostAuthentication>true</HostAuthentication>
     <HostCharacter>true</HostCharacter>
-    <MaxWorldServers>100</MaxWorldServers>
+    <MaxWorldServers>$MAX_WORLD_SERVERS</MaxWorldServers>
   </Networking>
   <GamePlay>
     <PathFinding>false</PathFinding>
@@ -40,7 +40,7 @@
   <Api>
     <Protocol>http</Protocol>
     <Domain>localhost</Domain>
-    <Port>10000</Port>
+    <Port>$API_PORT</Port>
   </Api>
   <Sso>
     <Domain />
diff --git a/docker-compose.yaml b/docker-compose.yaml
index bc4c292..2f8785b 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -5,7 +5,8 @@ services:
     env_file:
       - .env
     restart: always
-    ports: ["${DATABASE_PORT}:5432"]
+    ports:
+      - "${DATABASE_PORT}:5432"
     volumes:
       - ${DATA_FOLDER}:/var/lib/postgresql/data
   adminer:
@@ -13,13 +14,15 @@ services:
       restart: always
       depends_on:
           - db
-      ports: ["${ADMINER_PORT}:8080"]
+      ports:
+        - "${ADMINER_PORT}:8080"
   redis:
     image: redis:6.0.8-alpine
     env_file:
       - .env
     restart: always
-    ports: ["${REDIS_PORT}:6379"]
+    ports:
+      - "${REDIS_PORT}:6379"
     volumes:
       - ${DATA_FOLDER}:/data
   uchu:
@@ -33,5 +36,8 @@ services:
       - .env
     volumes:
       - ${GAME_FOLDER}:/res
+    ports:
+      - "2002:${CHARACTER_PORT}"
+      - "10000-10100:${API_PORT}-${MAX_API_PORT}"
     tty: true
     stdin_open: true