update containerfile

Containerfile

@@ -1,4 +1,5 @@
 FROM python:3-slim-trixie
+
 RUN apt-get update && \
     apt-get install -y \
         locales && \
@@ -7,8 +8,11 @@ RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
     sed -i -e 's/# de_DE.UTF-8 UTF-8/de_DE.UTF-8 UTF-8/' /etc/locale.gen && \
     dpkg-reconfigure --frontend=noninteractive locales
 
-COPY * /app/
+WORKDIR /app
+
 COPY requirements.txt requirements.txt
 RUN pip3 install -r requirements.txt
+COPY * /app/
+
 
 CMD ["python3", "-m", "flask", "run", "--host=0.0.0.0"]