Modify nginx/Dockerfile to use official image

We can now use the official Docker image for nginx since the issue that
preventing us from using it before has been resolved.

diff --git a/ch13/playbooks/nginx/Dockerfile b/ch13/playbooks/nginx/Dockerfile
index 75d5ada..9eaf376 100644 (file)
--- a/ch13/playbooks/nginx/Dockerfile
+++ b/ch13/playbooks/nginx/Dockerfile
@@ -1,28 +1,4 @@
-FROM debian:wheezy
-# From
-# https://github.com/nginxinc/docker-nginx/blob/57da11369acbec3256b0c2704a50282eeabb684f/Dockerfile
-
-# We repeat rather than do it from this one because of
-# https://github.com/docker/docker-py/issues/447
-
-
-RUN apt-key adv --keyserver pgp.mit.edu --recv-keys 573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62
-RUN echo "deb http://nginx.org/packages/mainline/debian/ wheezy nginx" >> /etc/apt/sources.list
-
-ENV NGINX_VERSION 1.7.9-1~wheezy
-
-RUN apt-get update && apt-get install -y nginx=${NGINX_VERSION} && rm -rf /var/lib/apt/lists/*
-
-# forward request and error logs to docker log collector
-RUN ln -sf /dev/stdout /var/log/nginx/access.log
-RUN ln -sf /dev/stderr /var/log/nginx/error.log
-
-# See Docker bug referenced at the top
-# VOLUME ["/var/cache/nginx"]
-
-EXPOSE 80 443
-
-CMD ["nginx", "-g", "daemon off;"]
+FROM nginx:latest
 
 RUN rm /etc/nginx/conf.d/default.conf \
        /etc/nginx/conf.d/example_ssl.conf