upgrade to version 2.2.1

Author: rodolpheche

Dockerfile

@@ -1,6 +1,6 @@
 FROM java:8-jdk
 
-ENV WIREMOCK_VERSION 2.1.12
+ENV WIREMOCK_VERSION 2.2.1
 
 RUN wget -q https://repo1.maven.org/maven2/com/github/tomakehurst/wiremock-standalone/${WIREMOCK_VERSION}/wiremock-standalone-$WIREMOCK_VERSION.jar
 

readme.md

@@ -4,7 +4,8 @@
 
 ## Supported tags & respective Dockerfile links :
 
-- `2.1.12`, `latest` [(2.1/Dockerfile)](https://github.com/rodolpheche/wiremock-docker/blob/2.1.12/Dockerfile)
+- `2.2.1`, `latest` [(2.2/Dockerfile)](https://github.com/rodolpheche/wiremock-docker/blob/2.2.1/Dockerfile)
+- `2.1.12` [(2.1/Dockerfile)](https://github.com/rodolpheche/wiremock-docker/blob/2.1.12/Dockerfile)
 
 ## How to use this image