diff --git a/Dockerfile b/Dockerfile
index ad15f9b4..3ba42006 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,6 +14,6 @@ RUN pip install -r requirements.txt
 COPY . .
 
 ENV PORT=8000
-EXPOSE $PORT
+EXPOSE 8000
 
-CMD ["python", "-m", "granian", "main:app", "--interface", "asgi", "--host", "0.0.0.0", "--port", "$PORT"]
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+CMD ["python", "-m", "granian", "main:app", "--interface", "asgi", "--host", "0.0.0.0", "--port", "8000"]
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