diff --git a/Dockerfile b/Dockerfile
index c21cdf6..70b2e9d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,15 +1,8 @@
 FROM python:3.9.2-alpine3.13
 
 WORKDIR /usr/src/app
-
-COPY setup.py /usr/src/app/
-RUN pip install .
-
-COPY prometheus_es_exporter/*.py /usr/src/app/prometheus_es_exporter/
-RUN pip install -e .
-
-COPY LICENSE /usr/src/app/
-COPY README.md /usr/src/app/
+COPY requirements.txt /usr/src/app/
+RUN pip install -r requirements.txt
 
 EXPOSE 9206