Add documentation about how to use via docker image (#20)
diff --git a/Dockerfile b/Dockerfile
index f7090f6..ef95f9a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,6 +16,8 @@
# under the License.
#
+# TODO: minimize the docker image size, now 524MB !!!
+
FROM golang:1.14.3-alpine AS build
WORKDIR /license-eye
diff --git a/README.md b/README.md
index f35bd38..33fa06c 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,13 @@
**NOTE**: The full configurations can be found in [the configuration section](#configurations).
+### Docker Image
+
+```shell
+$ docker run -it --rm -v $(pwd):/github/workspace apache/skywalking-eyes header check
+$ docker run -it --rm -v $(pwd):/github/workspace apache/skywalking-eyes header fix
+```
+
### Compile from Source
```bash
@@ -119,7 +126,6 @@
gopkg.in/yaml.v3
```
-
## Configurations
```yaml
