Added Dockerfile

Dockerfile

+FROM golang:1.4
+
+RUN git clone https://gitlab.com/gitlab-org/gitlab-ci-multi-runner.git \
+	/go/src/gitlab.com/gitlab-org/gitlab-ci-multi-runner \
+	-b master --depth 1
+
+COPY . /go/src/gitlab-runner-docker-cleanup
+WORKDIR /go/src/gitlab-runner-docker-cleanup
+RUN go-wrapper download
+RUN go-wrapper install
+RUN go-wrapper download gopkg.in/check.v1
+RUN go test
+ENTRYPOINT ["go-wrapper", "run"]

Makefile

 REVISION := $(shell git rev-parse --short HEAD || echo unknown)
-VERSION := $(shell git describe --tags || cat VERSION || echo dev)
+VERSION := $(shell git describe --tags || echo dev)
 VERSION := $(shell echo $(VERSION) | sed -e 's/^v//g')
 all: