build: ci only build release branches, master, tags

.gitlab-ci.yml

@@ -1,4 +1,3 @@
-
 variables:
     MAVEN_OPTS: "-Dmaven.repo.local=.m2/repository"
     IMAGE_64: coatisoftware/centos6_64_qt_llvm:qt591-llvm401
@@ -41,6 +40,10 @@ variables:
 
 build:Linux64:
     image: $IMAGE_64
+    only:
+        - /^release-.*$/
+        - master
+        - tags
     cache:
         key: cache_linux_64
         paths:
@@ -50,6 +53,10 @@ build:Linux64:
 
 build:Linux32:
     image: $IMAGE_32
+    only:
+        - /^release-.*$/
+        - master
+        - tags
     cache:
         key: cache_linux_32
         paths:
@@ -58,12 +65,6 @@ build:Linux32:
     when: manual
     <<: *build_def
 
-build:Linux32_tag:
-    image: $IMAGE_32
-    only:
-        - tags
-    <<: *build_def
-
 LicenseGenerator:
     image: $IMAGE_64
     stage: build