Fix makefile, dockerfile auth=>system

Dockerfile.system

@@ -0,0 +1,25 @@
+## builder image
+FROM golang:1.10-alpine AS builder
+
+WORKDIR /go/src/github.com/crusttech/crust
+
+ENV CGO_ENABLED=0
+
+COPY . .
+
+RUN apk update && apk upgrade && apk add --no-cache git
+RUN mkdir /build; \
+    go build \
+        -ldflags "-X github.com/crusttech/crust/internal/version.BuildTime="`date +%FT%T%z`" -X github.com/crusttech/crust/internal/version.Version="`git describe --always --tags` \
+        -o /build/system cmd/system/*.go
+
+## target image
+FROM alpine:3.7
+
+ENV PATH="/crust:{$PATH}"
+WORKDIR /crust
+
+COPY --from=builder /build/* /crust/
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+
+ENTRYPOINT /crust/system