Use docker multi-stage to build binary as well

This relies on go modules changes

Dockerfile

@@ -1,7 +1,25 @@
+# Build with modules
+FROM golang:1.12.1-alpine as builder
+RUN apk add --no-cache ca-certificates curl git build-base
+
+# Get dependencies first for docker caching
+WORKDIR /fhirbase
+COPY go.mod .
+COPY go.sum .
+RUN go mod download
+
+# Copy source
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -tags netgo -ldflags '-w -extldflags "-static"'
+
 FROM postgres:10.5
+WORKDIR /fhirbase
 
-COPY demo/bundle.ndjson.gzip .
-COPY bin/fhirbase-linux-amd64 /usr/bin/fhirbase
+COPY --from=builder /fhirbase/demo/bundle.ndjson.gzip .
+COPY --from=builder /fhirbase/fhirbase /usr/bin/fhirbase
+COPY --from=builder /fhirbase/schema /fhirbase/schema
+COPY --from=builder /fhirbase/transform /fhirbase/transform
+COPY --from=builder /fhirbase/web /fhirbase/web
 
 RUN chmod +x /usr/bin/fhirbase