dockerfilejs
v1.2.1
Published
Dockerfile-js, render well-formed Dockerfiles.
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Dockerfilejs
A simple Dockerfile generator. Try it now!
Based on the official Dockerfile Reference
var Dockerfile = require("dockerfilejs").Dockerfile;
var file = new Dockerfile();
file.comment('The above code example yields this file!')
.env({DEBUG:'express:* node index.js'})
.expose(8080)
.separator('\n')
.from({ image : 'node', tag : 'latest'})
.comment('FROM gets bumped under initial comments')
.render();
# The above code example yields this file!
FROM node:latest
ENV DEBUG="express:* node index.js"
EXPOSE 8080
# FROM gets bumped under initial comments
Complex environment? No problem!
file.env({
complex: {
objects: 'are not',
a: 'problem',
at : {
all: 'really!'
}
}}).render();
/*
ENV complex.objects="are not" \
complex.a=problem \
complex.at.all=really!
*/
Made a mistake? Get rid of it!
file.copy('~/.ssh/*', '/tmp');
// oops!
file.steps().pop();
Advanced examples
file.separator('\n')
// Will set the separator of each step for the entire file.render() output
file.label({ complex: { objects: 'allowed' } });
// LABEL complex.objects="allowed"
file.expose([8080, '8081', { number: 443, protocol: 'tcp' }]);
// EXPOSE 8080 8081 443/tcp
file.run({ command: ['touch /file.txt', ['echo', 'hello world', '>>', '/file.txt'] ] });
// RUN touch /file.txt \
// && echo "hello world" >> /file.txt
file.copy({ src : ['/id_rsa', '/id_rsa.pub'], dest: '/root/.ssh/' }, true);
// ONBUILD COPY ["/id_rsa", "/id_rsa.pub", "/root/.ssh"]
file.copy({ src : ['/id_rsa', '/id_rsa.pub'], dest: '/root/.ssh/', onbuild: true });
// ONBUILD COPY ["/id_rsa", "/id_rsa.pub", "/root/.ssh"]
file.copy({ src : ['/id_rsa'], dest: '/root/.ssh/', chown: '0:0' });
// COPY --chown=0:0 ["/id_rsa", "/root/.ssh"]
file.copy({ src : ['/id_rsa'], dest: '/root/.ssh/', user: 0, group: 0 });
// COPY --chown=0:0 ["/id_rsa", "/root/.ssh"]
file.copy({ src : ['/id_rsa'], dest: '/root/.ssh/', chown: { user: 0, group: 0 });
// COPY --chown=0:0 ["/id_rsa", "/root/.ssh"]
file.cmd({ executable: '/bin/bash', params: ['-c', 'hello world'] });
// CMD ["/bin/bash", "-c", "hello world"]
file.cmd({ command:'/bin/bash', params: ['-c', 'hello world'] })
// CMD /bin/bash -c "hello world"
file.healthCheck({
options: { retries: 4, timeout: '30s'},
command: 'wget',
params: ['example.com']
})
// HEALTHCHECK --retries=4 --timeout=30s \
// CMD wget example.com
file.user('root');
// USER root
Multi-stage builds
file.from({ image: 'node', tag: '10-alpine', name: 'build' })
// FROM node:10-alpine AS build
// ... run your build commands here ...
file.stage()
// Adds a new stage
file.from({ image: 'node', registry: 'docker.io', tag: '10-alpine' })
// Sets the `FROM` instruction in the new stage, etc ...
file.copy({ from: 'build', src: ['./lib'], dest: './lib' })
// COPY --from=build ["./lib", "./lib"]