Leiningen Docker Image

A Leiningen image based on Debian Wheezy and Oracle JDK8.

Build

git clone https://github.com/pandeiro/docker-lein && cd docker-lein

docker build -t 'lein' .

Pre-built

docker pull pandeiro/lein

Example Use Cases

These all assume you're using the pandeiro/lein image; otherwise replace that with the name of your custom-built image.

Note: the image now sets lein as the default ENTRYPOINT.

Clojure REPL

alias clj-repl='docker run -i -t pandeiro/lein repl'

clj-repl

Project-specific REPL

cd /path/to/project

alias project-repl="docker run -i -t -v $(pwd):/app pandeiro/lein repl"

project-repl

Dependency-cached lein

One issue (or feature, depending) with the above example is that it will download a fresh copy of all of the project's dependencies every time a REPL is run. If you prefer, you can generate an image with the dependencies already included. This bash function will help with that.

cache-lein() {
    imagename="$1"
    docker run -v $(pwd):/app pandeiro/lein deps
    docker commit $(docker ps -a | awk '/lein deps/ {print $1}' | head -1) "$imagename"
}

Development server

(Uses cache-lein function from above example.)

cd /path/to/ring-project

cache-lein project

alias ring="docker run -p 3000:3000 -v $(pwd):/app project ring"

ring server-headless

Artifact builder

(Uses ring from above example.)

ring uberwar # war file appears in $PWD/target, just as with lein

As a base image

You can build a Docker image from any leiningen-based project by starting with

FROM pandeiro/lein:latest

COPY . /app

RUN lein deps

# ...

License

Copyright © 2014 Murphy McMahon

Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.