Update Dockerfile

Dockerfile

@@ -4,30 +4,26 @@ FROM ubuntu:latest
 # Set environment variables
 ENV DEBIAN_FRONTEND=noninteractive
 
+# Install necessary packages
+RUN apt-get update && \
+    apt-get install -y curl sudo
+# Set environment variables
+ENV DEBIAN_FRONTEND=noninteractive
+
 # Install necessary packages
 RUN apt-get update && \
     apt-get install -y \
     curl \
     sudo \
     build-essential \
-    software-properties-common
-
-# Add deadsnakes PPA to install Python 3.9
-RUN add-apt-repository ppa:deadsnakes/ppa && \
-    apt-get update && \
-    apt-get install -y \
     python3.9 \
-    python3.9-venv \
-    python3.9-dev \
     python3-pip \
     default-jdk \
     default-jre \
     g++ \
-    gcc
-
-# Update alternatives to use python3.9 as default
-RUN update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.9 1 && \
-    update-alternatives --install /usr/bin/python python /usr/bin/python3.9 1
+    gcc \
+    python3.9-venv \
+    python3.9-pip
 
 # Install code-server
 RUN curl -fsSL https://code-server.dev/install.sh | sh
@@ -44,5 +40,3 @@ EXPOSE 8080
 
 # Start code-server
 CMD ["code-server", "--bind-addr", "0.0.0.0:7860", "--auth", "none"]
-
-# End of Dockerfile