Added conditional to disable tests when CORDA_DOCS_ONLY_BUILD envvar is present (#2371)

build.gradle

@@ -329,3 +329,30 @@ artifactory {
 task generateApi(type: net.corda.plugins.GenerateApi){
     baseName = "api-corda"
 }
+
+// This exists to reduce CI build time when the envvar is set (can save up to 40 minutes)
+if(System.getenv('CORDA_DOCS_ONLY_BUILD') != null) {
+    logger.info("Tests are disabled due to presence of envvar CORDA_DOCS_ONLY_BUILD")
+
+    allprojects {
+        test {
+            exclude '*/**'
+        }
+
+        it.afterEvaluate {
+            if(it.tasks.findByName("integrationTest") != null) {
+                integrationTest {
+                    exclude '*/**'
+                }
+            }
+        }
+
+        it.afterEvaluate {
+            if(it.tasks.findByName("smokeTest") != null) {
+                smokeTest {
+                    exclude '*/**'
+                }
+            }
+        }
+    }
+}