Draft readme

Dockerfile.template

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+FROM golang:alpine3.8 AS builder
+ARG ZIPPROTOC=https://github.com/protocolbuffers/protobuf/releases/download/v3.6.1/protoc-3.6.1-linux-x86_64.zip
+ENV PATH=/usr/local/protoc/bin:$PATH
+RUN apk update && apk --no-cache add  openssl-dev autoconf automake libtool git \
+        build-base gcc abuild binutils cmake linux-headers \
+        unzip curl ; \
+    go get -u google.golang.org/grpc ; \
+    go get -u github.com/golang/protobuf/protoc-gen-go ; \
+    curl -o protoc.zip -L $ZIPPROTOC ; \
+    unzip protoc.zip -d /usr/local/protoc ; 
+WORKDIR /app
+RUN git clone -b heroku https://github.com/patterns/fhirbuffer ; \
+    cd fhirbuffer ; \
+    go install ./cmd/...
+
+# final stage
+FROM alpine:3.8
+####ENV DATABASE_URL="postgres://postgres:postgres@localhost:5432/fhirbase"
+ENV FHIRBUFFER_COMMON=fhirbuffer3
+COPY --from=builder /go/bin/server /bin/fhirbuffer
+RUN adduser -D fhirbuffer ; 
+USER fhirbuffer
+CMD ["/bin/fhirbuffer"]
+
+

README.md

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+# fhirbuffer
+
+fhirbuffer is a gRPC service to export data from [Fhirbase](https://health-samurai.io/fhirbase).
+ The one thing we want it to do well is talk gRPC.
+ So a downstream process isn't aware of the database, SQL, and ultimately even Go.
+
+For a prototype of the end-to-end flow, see [fhirping app hosted on Glitch](https://accidental-oil.glitch.me).
+ Read the [summary blog post](https://patterns.github.io/tfx).
+![diagram](diagram/diagram.svg)
+
+## Quickstart
+
+1. Install Fhirbase (see their [Get Started](https://health-samurai.io/fhirbase) steps)
+2. Git clone repo
+3. Docker build
+
+```
+git clone https://github.com/patterns/fhirbuffer
+docker build -f fhirbuffer/Dockerfile.template -t fhirbuffer fhirbuffer
+docker run -ti --rm -e DATABASE_URL="postgres://postgres:postgres@localhost:5432/fhirbase" fhirbuffer
+```
+
+
+## Credits
+
+Health Samurai's
+ [Fhirbase](https://github.com/fhirbase/fhirbase)
+ [(LICENSE)](https://github.com/fhirbase/fhirbase/blob/master/MIT-LICENSE)
+
+gRPC
+ [Basics for Go](https://grpc.io/docs/tutorials/basic/go.html)
+
+Jack Christensen's
+ [PGX](https://github.com/jackc/pgx)
+ [(LICENSE)](https://github.com/jackc/pgx/blob/master/LICENSE)
+
+Johan Brandhorst's
+ [gRPC Client Authentication](https://jbrandhorst.com/post/grpc-auth/)
+ [(LICENSE)](https://github.com/johanbrandhorst/grpc-auth-example/blob/master/LICENSE)
+