diff --git a/Dockerfile b/Dockerfile
index ac8a6a5..277cacc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,10 +2,10 @@ FROM python:3-slim
 MAINTAINER Benjamin Bouvier <public@benj.me>
 
 RUN mkdir /app
+RUN apt update && \
+    apt install -y --force-yes libpq-dev build-essential
 COPY . /app
-RUN cd /app && \
-    apt update && \
-    apt install -y --force-yes libpq-dev build-essential && \
-    pip install -r requirements.txt
+WORKDIR /app
+RUN pip install -r requirements.txt
 
 CMD ["python", "/app/main.py"]