Add Dockerfile for example CLI

Dockerfile

@@ -0,0 +1,14 @@
+# Copyright (c) 2020 Ramon Quitales
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+FROM golang:1.14.1-alpine AS builder
+WORKDIR /go/memdb/
+COPY . /go/memdb/
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -v -o go-memdb .
+
+FROM alpine:latest
+WORKDIR /memdb/
+COPY --from=builder /go/memdb/go-memdb /memdb/go-memdb
+CMD ["./go-memdb"]

README.md

@@ -49,6 +49,7 @@ db := memdb.NewDB()
 Please refer to the [GoDoc](https://pkg.go.dev/github.com/rquitales/go-memdb) page full documentation. A example CLI implementation of `memdb` can also be seen in the [main.go](main.go) file.
 
 ### Running The Example CLI
+#### From Source
  1. Download the appropriate binary from your target OS from the [releases page](https://github.com/rquitales/go-memdb/releases), or compile from source with `go build -v .` after cloning this repository.
  2. Start the executable, eg: `./go-memdb`
  3. Type your commands (into STDIN)
@@ -65,6 +66,15 @@ Please refer to the [GoDoc](https://pkg.go.dev/github.com/rquitales/go-memdb) pa
 
 The query/functions are case insensitive, but the key/values are case sensitive!
 
+#### With Docker
+1. Build the docker image from the given Dockerfile in this project:
+    ```
+    docker build -t go-memdb .
+    ```
+2. Run the built image in a container interactively:
+    ```
+    docker run -it --rm go-memdb
+    ```