diff --git a/Dockerfile b/Dockerfile
index 689a19b..53ab081 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,9 +12,9 @@ COPY requirements.txt requirements.txt
 RUN pipenv run pip install -r requirements.txt
 COPY src/cogserver cogserver
 
-ARG HOST=0.0.0.0
-ARG PORT=8000
-ARG LOG_LEVEL=info
-ARG RELOAD=--reload
+ENV HOST=0.0.0.0
+ENV PORT=8000
+ENV LOG_LEVEL=info
+ENV RELOAD=--reload
 
 CMD pipenv run uvicorn cogserver:app --host ${HOST} --port ${PORT} --log-level ${LOG_LEVEL} ${RELOAD}