Fix copy directive

Author: peter-evans

Dockerfile

@@ -14,5 +14,5 @@ COPY LICENSE README.md /
 COPY requirements.txt /tmp/
 RUN pip install --requirement /tmp/requirements.txt
 
-COPY entrypoint.py /
+COPY entrypoint.py /entrypoint.py
 ENTRYPOINT [ "python", "./entrypoint.py" ]