Merge pull request #48 from Sh4d1/docker

Add working Docker build and run example in README

Dockerfile

@@ -1,11 +1,11 @@
 FROM golang:latest AS compiler
 WORKDIR /go/src/github.com/usefathom/fathom
 ADD . /go/src/github.com/usefathom/fathom
-RUN go get -u github.com/gobuffalo/packr/... && make build
+RUN go get -u github.com/gobuffalo/packr/... && make docker
 
 FROM alpine:latest
 EXPOSE 8080
+RUN apk add --update --no-cache bash ca-certificates
 WORKDIR /app
 COPY --from=compiler /go/src/github.com/usefathom/fathom/fathom .
 CMD ["./fathom", "server"]
-RUN apk add --update bash ca-certificates && rm -rf /var/cache/apk/*

Makefile

@@ -19,6 +19,10 @@ install: $(wildcard *.go) $(GOPATH)/bin/packr
 .PHONY: build
 build: $(EXECUTABLE)
 
+.PHONY: docker
+docker: $(GO_SOURCES) assets/build
+	GOOS=linux GOARCH=amd64 $(GOPATH)/bin/packr build -v -ldflags '-w $(LDFLAGS)' -o $(EXECUTABLE) $(MAIN_PKG)
+
 $(EXECUTABLE): $(GO_SOURCES) assets/build
 	go build -o $@ $(MAIN_PKG)
 

README.md

@@ -22,6 +22,11 @@ For getting a development version of Fathom up & running, go through the followi
 
 To install and run Fathom in production, [have a look at the installation instructions](https://github.com/usefathom/fathom/wiki/Installing-&-running-Fathom).
 
+## Building with Docker
+
+Ensure you have Docker installed and run `docker build -t fathom .`.
+Run the container with `docker run -d -p 8080:8080 fathom`.
+
 #### Tracking snippet 
 
 To start tracking, include the following JavaScript on your site and replace `yourfathom.com` with the URL to your Fathom instance.