add dockerfile

Dockerfile

@@ -0,0 +1,20 @@
+FROM centos:7
+
+WORKDIR /root
+
+RUN yum update -y && yum group install -y "Development Tools"
+
+RUN yum install -y wget cmake valgrind vim gdb net-tools
+
+# ENV LC_CTYPE="en_US.UTF-8"
+# Set the locale
+# RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
+#     locale-gen
+ENV LANG=en_US.UTF-8  
+ENV LANGUAGE=en_US:en  
+ENV LC_ALL=en_US.UTF-8 
+
+ENV TZ="Asia/Shanghai"
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
+CMD ["/bin/bash"]