typo fix

Dockerfile

@@ -0,0 +1,18 @@
+FROM node:8.6.0
+
+WORKDIR /usr/src/app
+
+COPY package.json .
+COPY pagepark.js .
+
+RUN mkdir /usr/src/app/domains
+RUN mkdir /usr/src/app/prefs
+
+RUN npm install
+
+EXPOSE 1339
+
+CMD ["node", "pagepark.js"]
+
+
+

README.md

@@ -262,6 +262,23 @@ I wanted to make code that could be used for people who are just getting started
 
 There will always be more work to do here. ;-)
 
+### Dockerfile
+
+You can run pagepark inside a docker container with the following procedure
+
+1. Install docker on your server
+2. Clone this repo and `cd` to it's directory
+3. Build the image with the following command `docker build -t pagepark/pagerank`
+4. Run the image like this `docker -p 1339:1339 run pagepark/pagerank`
+
+You can choose a different port or even the port 80 with the following command:
+
+`docker run -p 80:1339 run pagepark/pagerank`
+
+You can mount the `domains` and `prefs` folder in a local destination of you choosing with this command:
+
+`docker run -v path_to_domains_folder:/usr/app/src/domains -v path_to_prefs_folder:/usr/app/src/prefs -p 80:1339 pagepark/pagerank`
+
 ### Updates
 
 #### v0.7.9 11/8/17 by DW