feat: add ubuntu 12.04 docker build env

ubuntu-12.04-build-env/docker-compose.yml

@@ -0,0 +1,15 @@
+services:
+  ubuntu12-dev:
+    image: ubuntu:12.04
+    build:
+      context: .
+      #dockerfile: Dockerfile
+    container_name: ubuntu12-dev
+    volumes:
+      - /home/simon/ocs.git:/home/simon/ocs.git
+      #- /home/simon/.ssh:/home/simon/.ssh
+    environment:     
+      - TZ=Asia/Shanghai      
+    tty: true
+    stdin_open: true
+    command: tail -f /dev/null