Multi-Stage Node Image

Demo repo for building a minimal node app image

See Dockerfile

Building

Building the multi-stage docker image will run the tests, and only complete the build if the tests pass.

docker build -t theremix/multi-stage-node-image:latest .

this will run the tests in test/, then copy over just the artifacts needed to run the project in production, resulting in a minimal docker image

Successfully tagged theremix/multi-stage-node-image:latest

Test Failures

Watch the build fail by changing the test/api-spec.js, then attempt to build again.

results:

> multi-stage-node-image@1.0.0 test /build
> mocha



  Basic demo http json api
    1) should respond to GET /


  0 passing (28ms)
  1 failing

  1) Basic demo http json api
       should respond to GET /:

      AssertionError: expected 'ok' to equal 'not ok'
      + expected - actual

      -ok
      +not ok

      at request.get.expect.expect.expect.then.res (test/api-spec.js:14:31)
      at <anonymous>
      at process._tickCallback (internal/process/next_tick.js:188:7)



npm ERR! Test failed.  See above for more details.
The command '/bin/sh -c npm test' returned a non-zero code: 1

Running

Run a container with

docker run --rm -it -p 3000:3000 theremix/multi-stage-node-image:latest

or daemonized with

docker run -d --name=multi-stage-node-demo -p 3000:3000 theremix/multi-stage-node-image:latest

use curl

curl localhost:3000

{"data":"ok"}