Update Dockerfile

Dockerfile

@@ -1,13 +1,14 @@
-FROM ubuntu:latest
+FROM debian:buster
 
 RUN apt-get update &&\
     apt-get install -y \
         sudo ccache time git-core subversion build-essential g++ bash make \
         libssl-dev patch libncurses5 libncurses5-dev zlib1g-dev gawk \
-        flex gettext wget unzip xz-utils python3 python3-distutils-extra \
-        rsync curl libsnmp-dev liblzma-dev libpam0g-dev cpio rsync autoconf automake && \
-    wget https://github.com/cli/cli/releases/download/v2.49.2/gh_2.49.2_linux_amd64.deb && \
-    apt-get install -f ./gh_2.49.2_linux_amd64.deb && \
+        flex gettext wget unzip xz-utils python python-distutils-extra \
+        python3 python3-distutils-extra rsync curl libsnmp-dev liblzma-dev \
+        libpam0g-dev cpio rsync && \
+    wget https://github.com/cli/cli/releases/download/v2.39.2/gh_2.39.2_linux_amd64.deb && \
+    apt-get install -f ./gh_2.39.2_linux_amd64.deb && \
     apt-get clean && \
     useradd -m user && \
     echo 'user ALL=NOPASSWD: ALL' > /etc/sudoers.d/user