uploading pipeline files (fix for #1)

.gitlab-ci.yml

+include:
+  - project: osl/code/org.etsi.osl.main
+    ref: main
+    file: 
+      - ci-templates/default.yml
+      - ci-templates/build.yml
+    rules:
+      - if: '$CI_COMMIT_REF_NAME == "main"'
+  
+  - project: osl/code/org.etsi.osl.main
+    ref: develop
+    file: 
+      - ci-templates/default.yml
+      - ci-templates/build.yml
+    rules:
+      - if: '$CI_COMMIT_REF_NAME == "develop"'
+
+  - project: osl/code/org.etsi.osl.main
+    ref: $CI_COMMIT_REF_NAME
+    file: 
+      - ci-templates/default.yml
+      - ci-templates/build.yml
+    rules:
+      - if: '$CI_COMMIT_REF_PROTECTED == "true" && $CI_COMMIT_REF_NAME != "main" && $CI_COMMIT_REF_NAME != "develop"'
+
+  - project: osl/code/org.etsi.osl.main
+    ref: develop
+    file: 
+      - ci-templates/default.yml
+      - ci-templates/build_unprotected.yml
+    rules:
+      - if: '$CI_COMMIT_REF_NAME != "main" && $CI_COMMIT_REF_NAME != "develop" && $CI_COMMIT_REF_PROTECTED == "false"'
+
+maven_build:
+  extends: .maven_build
+
+docker_build:
+  extends: .docker_build
+  needs:
+    - maven_build

ci_settings.xml

+<settings xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
+  <servers>
+    <server>
+      <id>gitlab-maven</id>
+      <configuration>
+        <httpHeaders>
+          <property>
+            <name>Job-Token</name>
+            <value>${CI_JOB_TOKEN}</value>
+          </property>
+        </httpHeaders>
+      </configuration>
+    </server>
+  </servers>
+</settings>