Add Dockerfile; Update Makefile and dependencies

README.md

@@ -23,11 +23,30 @@ installed in order to build the frontend assets.
 Download the source code and then run:
 
 ```sh
-$ make build
+make build
 ```
 
 The `asynqmon` binary should be created in the current directory.
 
+### Running from Docker
+
+To run Asynqmon in Docker container, you only need to install [Docker](https://www.docker.com/get-started) to your system. No need to install [Node.js](https://nodejs.org/) and [Yarn](https://yarnpkg.com/), they will be installed automatically in container.
+
+After that, just run this command:
+
+```sh
+make docker
+```
+
+By default, Asynqmon runs on `http://localhost:8080` and waiting to connect to the Redis server on port `6379`. You can easily change this settings by running Docker container with custom options, like this:
+
+```sh
+docker run --rm \
+    --name asynqmon \
+    -p 3000:3000 \
+    asynqmon --port=3000 --redis_addr=localhost:6380
+```
+
 ## Usage
 
 Asynqmon server needs to connect to redis server to serve data.
@@ -36,19 +55,19 @@ By default, it connects to redis server running on port 6379 locally, and the se
 To use the defaults, simply run and open http://localhost:8080.
 
 ```sh
-$ asynqmon
+asynqmon
 ```
 
 Pass flags to specify port, redis server address, etc.
 
 ```sh
-$ asynqmon --port=3000 --redis_addr=localhost:6380
+asynqmon --port=3000 --redis_addr=localhost:6380
 ```
 
 To see all available flags, run
 
 ```sh
-$ asynqmon --help
+asynqmon --help
 ```
 
 ## License