Dockerfile nodejs + nginx

nginx.conf
worker_processes 4;

events { worker_connections 1024; }

http {


        server {
            listen 80;
            server_name localhost

            client_max_body_size 1000M;

            access_log            /var/log/nginx/http.log;

            gzip on;
            gzip_disable "msie6";

            gzip_vary on;
            gzip_proxied any;
            gzip_comp_level 6;
            gzip_buffers 16 8k;
            gzip_http_version 1.1;
            gzip_min_length 256;
            gzip_types text/html text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/vnd.ms-fontobject application/x-font-ttf font/opentype image/svg+xml image/x-icon;

            location / {
              proxy_set_header        Host $host;
              proxy_set_header        X-Real-IP $remote_addr;
              proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
              proxy_set_header        X-Forwarded-Proto $scheme;

              proxy_pass          http://localhost:3000;
              proxy_read_timeout  300;
            }
        }

}

========

Dockerfile

FROM node:7.4.0

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

ARG NODE_ENV
ENV NODE_ENV $NODE_ENV
RUN npm install yarn -g
ADD package.json /usr/src/app/package.json
RUN yarn

ENV NGINX_VERSION 1.11.8-1~jessie

RUN apt-key adv --keyserver hkp://pgp.mit.edu:80 --recv-keys 573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62 \
 && echo "deb http://nginx.org/packages/mainline/debian/ jessie nginx" >> /etc/apt/sources.list \
 && apt-get update \
 && apt-get install --no-install-recommends --no-install-suggests -y \
      ca-certificates \
      nginx=${NGINX_VERSION} \
      nginx-module-xslt \
      nginx-module-geoip \
      nginx-module-image-filter \
      nginx-module-perl \
      nginx-module-njs \
      gettext-base \
 && 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 \
 && ln -sf /dev/stderr /var/log/nginx/error.log


# Remove the default Nginx configuration file
RUN rm -v /etc/nginx/nginx.conf

# Copy a configuration file from the current directory
ADD nginx.conf /etc/nginx/

# Append "daemon off;" to the configuration file
RUN echo "daemon off;" >> /etc/nginx/nginx.conf

COPY . /usr/src/app/
CMD service nginx start & npm start;
EXPOSE 80