Update Dockerfile

Dockerfile

@@ -11,6 +11,7 @@ RUN apt-get update -y && \
     apt-get remove -y python3 && \
     alias pip='python3.11 -m pip' && \
     alias python='python3.11' && \
+    chmod +x python && \
     apt-get install -y python3.11 python3-pip && \
     pip install packaging
 RUN curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain nightly -y