Add Dockerfile.

Dockerfile

@@ -0,0 +1,17 @@
+FROM golang:1 AS builder
+
+ENV CGO_ENABLED=0
+
+WORKDIR /go/src/git.hacknology.de/projekte/spaceapi.git
+COPY . .
+
+RUN go test ./...
+RUN go install -v -tags netgo -ldflags "-w" ./cmd/spaceapi-server
+
+FROM busybox
+COPY --from=builder /go/bin/spaceapi-server /bin/spaceapi-server
+RUN mkdir /data
+
+EXPOSE 8080
+WORKDIR /data
+ENTRYPOINT [ "/bin/spaceapi-server" ]