diff --git a/Dockerfile b/Dockerfile
index cf06f6f..4c44ee4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,14 +1,11 @@
 FROM python:3-alpine
-
+ARG UID_
+ENV UID_=1000
 RUN apk add --no-cache --upgrade bash
-RUN mkdir -p /www
-RUN chown -R 1000:1000 /www 
+
+ADD --chown=$UID_:$UID_ . /www
 WORKDIR /www
 
-COPY . .
-#COPY --chown=1000:1000 . .
-#COPY --chown=daemon:daemon settings.ini.example settings.ini
-RUN cp settings.ini.example settings.ini
 RUN chmod +x start.sh
 RUN set -e; \
 	apk add --no-cache --virtual .build-deps \
@@ -19,6 +16,4 @@ RUN set -e; \
 	pip install -r requirements.txt; \
 	apk del .build-deps;
 
-#EXPOSE 9090
-USER 1000
 ENTRYPOINT ["./start.sh"]
diff --git a/README.md b/README.md
index 5416d6b..2f537fc 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,11 @@ Biltegi honetako edukiak klonatu eta menpekotasunak instalatu:
 #### Docker irudia sortu
 
     docker build -t aitzol/ldap-webui:latest .
-    
+
+edo
+
+    docker build -t aitzol/ldap-webui:latest . --build-arg UID_=$UID    
+
 #### Edukiontzia sortu
 
     docker-compose up -d
diff --git a/start.sh b/start.sh
index 3aa4db0..896f098 100755
--- a/start.sh
+++ b/start.sh
@@ -1,5 +1,11 @@
 #!/bin/bash
-if [ ! -f /tmp/foo.txt ]; then
+if [ ! -f settings.ini ]; then
     cp settings.ini.example settings.ini
 fi
-uwsgi --http :9090 --enable-threads --uid 1000 --wsgi-file app.py
+
+if [[ $# -gt 0 ]]; then
+    UID_=$1
+    echo $UID_
+fi
+
+uwsgi --http :9090 --enable-threads --uid $UID_ --wsgi-file app.py