Add a multistage Dockerfile

Dockerfile

@@ -0,0 +1,28 @@
+# BUILDER
+FROM golang AS builder
+
+ENV CGO_ENABLED=0 \
+    GOOS=linux \
+    GOARCH=amd64
+
+WORKDIR $GOPATH/src/
+
+COPY *.go ./
+
+RUN go build \
+    -a -tags netgo -ldflags '-w -extldflags "-static"' \
+    -o /go/bin/capture \
+    *.go
+
+
+# MAIN
+FROM alpine
+
+EXPOSE 9000 9001
+
+COPY --from=builder /go/bin/capture /opt/capture
+
+USER 10001
+
+ENTRYPOINT ["/opt/capture"]
+

README.md

@@ -10,6 +10,10 @@ proxying the response back to the client, while showing them in a dashboard
 
     ./capture -url=https://example.com/
 
+or using Docker (see how to build the image below)
+
+    docker run -p 9000:9000 -p 9001:9001 capture -url=https://example.com/
+
 
 #### Settings
 
@@ -56,6 +60,12 @@ Now you have an executable binary in your directory
 
 **Note:** you can change `GOOS=darwin` to `linux` or `windows` to create an executable for your corresponding Operating System
 
+Building a Docker image:
+
+    git clone --depth 1 https://github.com/ofabricio/capture.git
+    cd capture
+    docker build . -t capture
+
 ## Plugins
 
 Put [plugin](https://golang.org/pkg/plugin/) files in the current directory.