Initiate project

Author: Nicolas Huray

.gitignore

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+.DS_Store

README.md

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+# wercker-docker-build
+
+This wercker step just build your package as a [Docker](https://docs.docker.com/reference/commandline/cli/#build) image.
+
+This step must be used with a wercker box build with [Docker Support](http://devcenter.wercker.com/articles/docker)
+
+
+## Versions
+
+| Release date | Step version | Docker version |
+| -------------| -------------| ---------------|
+| 2014-11-28   | 1.0.0        | 1.3.1          |
+| -------------| -------------| ---------------|
+
+
+## Options
+
+* `force-rm` (optional, default: `false`) Always remove intermediate containers, even after unsuccessful builds
+* `no-cache` (optional, default: `false`) Do not use cache when building the image
+* `quiet` (optional, default: `false`) Suppress the verbose output generated by the containers
+* `rm` (optional, default: `true`)  Remove intermediate containers after a successful build
+* `tag` (optional but advised) Repository name (and optionally a tag) to be applied to the resulting
+
+## Example
+
+
+The following example build a package as a Docker image with the sha1 of the commit :
+
+```
+build:
+steps:
+...
+- nhuray/docker-build:
+tag: ${WERCKER_GIT_COMMIT:0:7}
+```

run.sh

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+#!/bin/sh
+set -e
+
+if [ -n "$WERCKER_DOCKER_BUILD_FORCE_RM" ]; then
+  FORCE_RM="--force-rm $WERCKER_DOCKER_BUILD_FORCE_RM"
+fi
+
+if [ -n "$WERCKER_DOCKER_BUILD_NO_CACHE" ]; then
+  NO_CACHE="--no-cache $WERCKER_DOCKER_BUILD_NO_CACHE"
+fi
+
+if [ -n "$WERCKER_DOCKER_BUILD_QUIET" ]; then
+  QUIET="--quiet $WERCKER_DOCKER_BUILD_QUIET"
+fi
+
+if [ -n "$WERCKER_DOCKER_BUILD_RM" ]; then
+  RM="--rm $WERCKER_DOCKER_BUILD_RM"
+fi
+
+if [ -n "$WERCKER_DOCKER_BUILD_TAG" ]; then
+  TAG="--tag $WERCKER_DOCKER_BUILD_TAG"
+fi
+
+type_exists() {
+  if [ $(type -P $1) ]; then
+    return 0
+  fi
+  return 1
+}
+
+# Check for Docker
+if ! type_exists 'docker'; then
+  fail 'Docker is not installed on this box.'
+  info 'Please use a box with docker installed : http://devcenter.wercker.com/articles/docker'
+  exit 1
+fi
+
+# Check a Dockerfile is present
+if [ -f 'Dockerfile' ]; then
+  fail 'A Dockerfile is required.'
+  info 'Please create a Dockerfile : https://docs.docker.com/reference/builder/'
+  exit 1
+fi
+
+# Build the docker image
+info 'building docker image'
+
+set +e
+DOCKER_BUILD="docker build $FORCE_RM $NO_CACHE $QUIET $RM $TAG ."
+debug "$DOCKER_BUILD"
+DOCKER_BUILD_OUTPUT=$($DOCKER_BUILD)
+
+if [[ $? -ne 0 ]];then
+  warn $DOCKER_BUILD_OUTPUT
+  fail 'docker build failed';
+else
+  success 'docker build succeed';
+fi
+set -e

wercker-step.yml

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+name: docker-build
+version: 1.0.0
+description: build docker image