Added Dockerfile

.dockerignore

@@ -0,0 +1,7 @@
+docs/
+test/
+node_modules/
+.travis.yml
+CONTRIBUTING.md
+LICENSE
+README.md

Dockerfile

@@ -0,0 +1,11 @@
+FROM node:12.18-alpine3.9
+
+WORKDIR /app
+
+ENV NODE_ENV=production
+
+COPY . .
+
+RUN npm i --production 
+
+ENTRYPOINT [ "node", "./bin/getpapers.js" ]

README.md

@@ -14,16 +14,28 @@ getpapers can fetch article metadata, fulltexts (PDF or XML), and supplementary
 
 ## Installation
 
-### Installing nodeJS
+### Using NodeJS
+
+#### Installing NodeJS
 
 Please follow [these cross-platform instructions](https://github.com/blahah/installing-node-tools)
 
-### Installing getpapers
+#### Installing getpapers
 
 ```bash
 $ npm install --global getpapers
 ```
 
+### Using Docker
+
+#### Installing Docker
+Please follow [these cross-platform instructions](https://docs.docker.com/get-docker/)
+
+#### Building Docker image
+```bash
+docker build -t getpapers . 
+```
+
 ## Usage
 
 Use `getpapers --help` to see the command-line help:
@@ -49,6 +61,21 @@ Use `getpapers --help` to see the command-line help:
 
 By default, getpapers uses the EuropePMC API.
 
+### Docker
+```bash
+docker run --rm -it getpapers --help
+```
+
+#### Attaching directories
+Docker containers have their own isolated file system that is not accessible by user directly.
+In order to get fetched files, you need to mount a local directory when you run a container:
+
+```bash
+mkdir tmp
+docker run --rm -it -v "$(pwd)"/tmp:/data getpapers --query 'c4 photosynthesis flaveria' --outdir=/data
+``` 
+More about bind mounts you can find [here](https://docs.docker.com/storage/bind-mounts/).
+
 ## Screenshot
 
 ![screenshot](https://raw.githubusercontent.com/ContentMine/getpapers/master/docs/screenshot.png)