Add Dockerfile and update README

README.md

@@ -21,13 +21,41 @@ worth my time.
 
 ### Building
 
-`go install -ldflags="-s -w" -trimpath ./cmd/ubsserver`
+You can get prebuilt binaries for a number of platforms from the gitlab repository in the "Download artifacts" section.
+To build from source, just run:
+
+`go install ./cmd/ubsserver`
+
+It is also possible to build a very basic Docker container image by running:
+
+`docker build -t ubsserver -f docker/ubsserver/Dockerfile .`
 
 ### Running
 
+To run the binary you just built:
+
 `~/go/bin/ubsserver`
 
-TODO: Suggest deployment setups
+It will start the API server listening on port 8090 and using the `data` directory under $PWD as the datastore.
+You can change the listening address using the `-listen` flag (e.g.: `-listen :9999` will listen on port 9999 on all
+addresses).
+
+Similarly, you can change the datastore using the `-store` flag. The store is defined in the format
+`driver_name:driver_args` where `driver_name` is the name of the store driver while `driver_args` contains
+driver-specific settings.
+
+Currently, only two drivers are implemented:
+
+ - **mem**: a volatile RAM-backed datastore only useful for testing and debugging. It does not take any arguments.
+ - **fs**: the default driver: it stores sync data in json files in the directory specified as the argument (default is
+   `data`)
+
+If you built the container image, you can run the containerised version:
+
+`docker run -it --rm -v /tmp/data:/data -p 8888:8090 localhost/ubsserver`
+
+You can replace `/tmp/data` with the name of the directory where you want to store sync data and `8888` with the port
+where you want to expose the API service.
 
 ## Roadmap
 

docker/ubsserver/Dockerfile

@@ -0,0 +1,14 @@
+FROM golang:alpine as builder
+WORKDIR /go/src/uBrowserSync
+COPY . .
+ARG GOOS=linux
+ARG GOARCH=amd64
+ARG GOARM=6
+RUN CGO_ENABLED=0 go install -ldflags="-w -s" -trimpath ./cmd/ubsserver
+
+FROM scratch
+WORKDIR /
+VOLUME ["/data"]
+COPY --from=builder /go/bin/ubsserver /usr/bin/
+EXPOSE 8090
+ENTRYPOINT ["/usr/bin/ubsserver"]