node package manager

dockerfile-parse

Parse a Dockerfile into a POJO

dockerfile-parse

Parse a Dockerfile into a POJO

$ npm install dockerfile-parse

Take this Dockerfile for example:

FROM quarry/monnode
ADD . /srv/app
RUN cd /srv/app && npm install
RUN cd /srv/app && make build
WORKDIR /srv/app
VOLUME /srv/data
ADD /my/source /src/dest
EXPOSE 80
EXPOSE 9989
VOLUME /srv/data2
RUN cd /srv/app && make build2
ENTRYPOINT node index.js

Lets parse it into a JavaScript object to see what it says:

var fs = require('fs')
var parse = require('docker')
 
var dockerFile = fs.readFileSync(__dirname + '/Dockerfile', 'utf8')
var pojo = parse(dockerFile)
 
console.dir(pojo)
 
/*
 
{
from:'quarry/monnode',
workdir:'/srv/app',
entrypoint:'node index.js',
add:[{
source:'.',
dest:'/srv/app'
}, {
source:'/my/source',
dest:'/src/dest'
}],
expose:[80, 9989],
volume:['/srv/data', '/srv/data2'],
run:[
'cd /srv/app && npm install',
'cd /srv/app && make build',
'cd /srv/app && make build2'
]
}
*/

Return a parsed version of the string that is a Dockerfile contents.

The pojo will have array fields for the following statements:

  • add -> {source:'', dest:''}
  • expose
  • volume
  • run

MIT