diff --git a/Dockerfile b/Dockerfile
index e4a2307..25ececc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,8 +14,7 @@ RUN set -ex \
  && useradd -d /opt/factorio -M -u 10000 factorio \
  && tar -C /opt -x -z -f /tmp/factorio.tgz \
  && chown -R factorio:factorio /opt/factorio \
- && rm /tmp/factorio.tgz \
- && sed -i "s;^write-data=.*$;write-data=/data;" /opt/factorio/config/config.ini
+ && rm /tmp/factorio.tgz
 
 USER factorio
 
diff --git a/config.ini b/config.ini
new file mode 100644
index 0000000..e53291c
--- /dev/null
+++ b/config.ini
@@ -0,0 +1,4 @@
+[path]
+read-data=__PATH__executable__/../../data
+write-data=/data
+
diff --git a/start.sh b/start.sh
index 5b515df..0c8b652 100755
--- a/start.sh
+++ b/start.sh
@@ -6,6 +6,11 @@ ACTION=$1
 BINARY="/opt/factorio/bin/x64/factorio"
 MAP_FILE="mapfile.zip"
 
+if ! [ -e /opt/factorio/config/config.ini ]; then
+  mkdir -p /opt/factorio/config
+  cp /opt/defaults/config.ini /opt/factorio/config/config.ini
+fi
+
 case ${ACTION} in
   "init")
     echo "Initializing files in case they do not exist: map-gen-settings.json / server-settings.json"