feat(dockerize): add docker configuration

.circleci/config.yml

@@ -0,0 +1,12 @@
+version: 2
+jobs:
+  build:
+    working_directory: /app
+    docker:
+      - image: docker:17.05.0-ce-git
+    steps:
+      - checkout
+      - setup_remote_docker
+      - run:
+          name: Build and push image to Docker Hub
+          command: sh .circleci/docker.sh

.circleci/docker.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+set -u
+
+# collect params from ENV vars
+DATE=`date +%Y-%m-%d`
+DOCKER_REPOSITORY="pelias"
+DOCKER_PROJECT="${DOCKER_REPOSITORY}/${CIRCLE_PROJECT_REPONAME}"
+
+# skip builds on greenkeeper branches
+if [[ -z "${CIRCLE_BRANCH##*greenkeeper*}" ]]; then
+	exit 0
+fi
+
+# the name of the image that represents the "branch", that is an image that will be updated over time with the git branch
+# the production branch is changed to "latest", otherwise the git branch becomes the name of the version
+if [[ "${CIRCLE_BRANCH}" == "production" ]]; then
+	DOCKER_BRANCH_IMAGE_VERSION="latest"
+else
+	DOCKER_BRANCH_IMAGE_VERSION="${CIRCLE_BRANCH}"
+fi
+DOCKER_BRANCH_IMAGE_NAME="${DOCKER_PROJECT}:${DOCKER_BRANCH_IMAGE_VERSION}"
+
+# the name of the image that represents the "tag", that is an image that is named with the date and git commit and will never be changed
+DOCKER_TAG_IMAGE_VERSION="${CIRCLE_BRANCH}-${DATE}-${CIRCLE_SHA1}"
+DOCKER_TAG_IMAGE_NAME="${DOCKER_PROJECT}:${DOCKER_TAG_IMAGE_VERSION}"
+
+# build image and login to docker hub
+docker build -t $DOCKER_PROJECT .
+docker login -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD"
+
+# copy the image to each of the two tags, and push
+docker tag $DOCKER_PROJECT $DOCKER_BRANCH_IMAGE_NAME
+docker tag $DOCKER_PROJECT $DOCKER_TAG_IMAGE_NAME
+docker push $DOCKER_BRANCH_IMAGE_NAME
+docker push $DOCKER_TAG_IMAGE_NAME

.dockerignore

@@ -0,0 +1,5 @@
+.git
+node_modules
+data
+*.png
+*.md

Dockerfile

@@ -0,0 +1,19 @@
+# base image
+FROM pelias/baseimage
+
+# change working dir
+ENV WORKDIR /code/pelias/fuzzy-tester
+WORKDIR ${WORKDIR}
+
+# install npm dependencies
+COPY ./package.json ${WORKDIR}
+RUN npm install
+
+# add code from local checkout
+ADD . ${WORKDIR}
+
+# run tests
+RUN npm test
+
+# set entrypoint
+ENTRYPOINT [ "./bin/fuzzy-tester" ]

README.md

@@ -157,3 +157,42 @@ giving it a weight of 10 points, set weights to the following:
 ```
 
 Weights can be nested and are completely optional, in which case the defaults will be in effect.
+
+## Using the Docker image
+
+### rebuild the image
+
+you can rebuild the image on any system with the following command:
+
+```bash
+$ docker build -t pelias/fuzzy-tester .
+```
+
+### download pre-built image
+
+Up to date Docker images are built and automatically pushed to Docker Hub from our continuous integration pipeline
+
+You can pull the latest stable image with
+
+```bash
+$ docker pull pelias/fuzzy-tester
+```
+
+### running tests in a container
+
+You can bind-mount local tests to make them available inside the container using the `-v` flag.
+
+In this example, the local file `./pelias.json` and local directory `./test_cases` are bind-mounted in to the container.
+
+```bash
+docker run --rm -i \
+  -v './pelias.json:/code/pelias.json' \
+  -v './test_cases:/code/pelias/fuzzy-tester/test_cases' \
+  pelias/fuzzy-tester --help
+```
+
+### download custom image tags
+
+We publish each commit and the latest of each branch to separate tags
+
+A list of all available tags to download can be found at https://hub.docker.com/r/pelias/fuzzy-tester/tags/