diff --git a/Dockerfile b/Dockerfile
index 7cc1534..7e03a92 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,13 @@
 FROM python:3.7
 
-COPY bibcheck.py /
-CMD ["python", "bibcheck.py"]
+RUN useradd --create-home appuser
+
+COPY requirements.txt /home/appuser
+RUN pip install -r /home/appuser/requirements.txt
+
+
+WORKDIR /home/appuser
+USER appuser
+
+COPY bibcheck.py ./
+CMD ["python", "./bibcheck.py"]
diff --git a/bibcheck.py b/bibcheck.py
index 2fa09da..e0ff861 100644
--- a/bibcheck.py
+++ b/bibcheck.py
@@ -19,6 +19,8 @@ def main():
     response = br.submit()
     br.follow_link(text_regex=r"Konto")
     response = br.follow_link(text_regex=r"Ausleihe zeigen")
+    br.select_form('Form0')
+    response = br.submit(name='textButton$0', label='Alle verlängern')
     lentlist = bs4.BeautifulSoup(response.read(), 'html.parser')
     table = lentlist.select('table[class="rTable_table"]')[0]
     allinfo = []
diff --git a/requirements.txt b/requirements.txt
index f05f949..b4b3331 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,4 @@
 beautifulsoup4==4.8.0
-bs4==0.0.1
 certifi==2019.9.11
 chardet==3.0.4
 html5lib==1.0.1