add: Ubuntu 20.04 base environment image

Author: inureyes

commons/Dockerfile.base.ubuntu20.04

@@ -0,0 +1,20 @@
+FROM ubuntu:20.04
+# Install base packages into default Ubuntu 20.04
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update && \
+    apt-get install -y \
+        ca-certificates apt-utils \
+        wget curl git-core \
+        vim-tiny zip unzip \
+        libssl-dev \
+        libmpdec2 \
+        proj-bin libproj-dev \
+        libgeos-dev libgeos++-dev \
+        mime-support \
+        gcc g++ \
+        cmake ncurses-term && \
+    ln -sf /usr/share/terminfo/x/xterm-color /usr/share/terminfo/x/xterm-256color && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/
+
+# vim: ft=dockerfile