Adding env vars

spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/gradle/release.gradle

@@ -54,6 +54,9 @@ ext {
 
 if (isReleaseToCentral) {
 	signing {
+		def signingKey = findProperty("signingKey")
+		def signingPassword = findProperty("signingPassword")
+		useInMemoryPgpKeys(signingKey, signingPassword)
 		sign configurations.archives
 	}
 

spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/pom.xml

@@ -224,6 +224,8 @@
 										<argument>-Pcentral</argument>
 										<argument>-PsonatypeUsername=${env.SONATYPE_USER}</argument>
 										<argument>-PsonatypePassword=${env.SONATYPE_PASSWORD}</argument>
+										<argument>-PsigningKey=${env.FOO_SEC}</argument>
+										<argument>-PsigningPassword=${env.FOO_PASSPHRASE}</argument>
 										<argument>publishPlugins</argument>
 									</arguments>
 								</configuration>