Rename Docker to Dockerfile

Dockerfile

@@ -0,0 +1,16 @@
+FROM golang:1.13.5-alpine3.10 as builder
+
+MAINTAINER Łukasz Budnik lukasz.budnik@gmail.com
+
+# build yosoy
+RUN apk add git
+RUN git clone https://github.com/lukaszbudnik/yosoy.git
+RUN cd /go/yosoy && go build
+
+FROM alpine:3.10
+COPY --from=builder /go/yosoy/yosoy /bin
+
+# register entrypoint
+ENTRYPOINT ["yosoy"]
+
+EXPOSE 80