Correct variables syntax

.gitlab-ci.yml

 image: docker:stable
 services:
     - docker:dind
- 
+
 stages:
     - metabuild
     - build
-    - static_tests   
-    - dynamic_tests     
+    - static_tests
+    - dynamic_tests
     - deployment
 
 # build the container that further steps will run in in order to avoid duplicating instructions between steps
@@ -28,7 +28,7 @@ metabuild:
             - master
             - dev-ci
     when: manual
-        
+
 # build the container that was modified
 build:
     stage: build
@@ -40,7 +40,7 @@ build:
         - docker build -f $MODIFIED_IMAGE/Dockerfile $MODIFIED_IMAGE -t $REGISTRY/ci-builds/$CI_COMMIT_SHA
         - docker push $REGISTRY/ci-builds/$CI_COMMIT_SHA
     after_script:
-        - docker logout $REGISTRY        
+        - docker logout $REGISTRY
     tags: [build]
     only:
         changes:
@@ -65,8 +65,8 @@ clair:
         - wget https://github.com/arminc/clair-scanner/releases/download/v8/clair-scanner_linux_amd64
         - mv clair-scanner_linux_amd64 clair-scanner
         - chmod +x clair-scanner
-        - while( ! wget -q -O /dev/null http://docker:6060/v1/namespaces ) ; do sleep 1 ; done 
-        - ./clair-scanner -c http://docker:6060 --ip $(hostname -i) -r clair-report.json -l clair.log -w $MODIFIED_IMAGE/clair-whitelist.yml --threshold="High" $REGISTRY/ci-builds/$CI_COMMIT_SHA 
+        - while( ! wget -q -O /dev/null http://docker:6060/v1/namespaces ) ; do sleep 1 ; done
+        - ./clair-scanner -c http://docker:6060 --ip $(hostname -i) -r clair-report.json -l clair.log -w $MODIFIED_IMAGE/clair-whitelist.yml --threshold="High" $REGISTRY/ci-builds/$CI_COMMIT_SHA
     artifacts:
         paths:
             - clair-report.json
@@ -90,12 +90,12 @@ docker-bench-security:
         - docker logout $REGISTRY
         - source /etc/profile.d/ci-variables
         - sed -i -e "s/$MODIFIED_IMAGE_FULL/$REGISTRY\/ci-builds\/$CI_COMMIT_SHA:latest/g" $MODIFIED_IMAGE/docker-compose.yml
-        # remove links to external networks to be able to start the container locally 
+        # remove links to external networks to be able to start the container locally
         - sed -i -e '/networks/,+3d' $MODIFIED_IMAGE/docker-compose.yml
         # if secrets.example files exist, remove the .example extension to be able to start the container
         - if [[ -d $MODIFIED_IMAGE/secrets ]]; then for i in $MODIFIED_IMAGE/secrets/*.example ; do cp $i $(echo $i| cut -d '.' -f1,2); done; fi;
         - docker volume create $CONTAINER_NAME
-    script:        
+    script:
         - cd $MODIFIED_IMAGE
         - docker-compose up -d
         - git clone https://github.com/docker/docker-bench-security.git
@@ -105,7 +105,7 @@ docker-bench-security:
         paths:
             - report.txt
     after_script:
-        - docker logout $REGISTRY 
+        - docker logout $REGISTRY
     tags: [build]
     only:
         changes:
@@ -116,11 +116,11 @@ docker-bench-security:
             - dev-ci
 
 # automatically deploy the container on pica01-test
-deployment-test: 
+deployment-test:
     stage: deployment
     image: $REGISTRY/pica-ci:latest
     variables:
-        - PICA_ENVIRONMENT: "TEST"
+        PICA_ENVIRONMENT: "TEST"
     before_script:
         - source /etc/profile.d/ci-variables
         - export DOCKER_HOST=tcp://pica01-test.picasoft.net:2376
@@ -131,7 +131,7 @@ deployment-test:
         - echo "$DEV_DOCKER_CLIENT_CERT" > $DOCKER_CERT_PATH/cert.pem
         - echo "$DEV_DOCKER_CLIENT_KEY" > $DOCKER_CERT_PATH/key.pem
     script:
-        - echo $REGISTRY_PASSWORD | docker login $REGISTRY -u $REGISTRY_USERNAME --password-stdin     
+        - echo $REGISTRY_PASSWORD | docker login $REGISTRY -u $REGISTRY_USERNAME --password-stdin
         - docker pull $REGISTRY/ci-builds/$CI_COMMIT_SHA:latest
         - docker tag $REGISTRY/ci-builds/$CI_COMMIT_SHA:latest  $MODIFIED_IMAGE_FULL
         - cd $MODIFIED_IMAGE
@@ -152,11 +152,11 @@ deployment-test:
 
 # automatically deploy the container on the production host associated with the modified image
 # this will only happen after manually triggering the deployment
-deployment-prod: 
+deployment-prod:
     stage: deployment
     image: $REGISTRY/pica-ci:latest
     variables:
-        - PICA_ENVIRONMENT: "PRODUCTION"
+        PICA_ENVIRONMENT: "PRODUCTION"
     before_script:
         - source /etc/profile.d/ci-variables
         - TMP_DOCKER_CA_CERT="${HOST}_DOCKER_CA_CERT" && eval DOCKER_CA_CERT_VARIABLE=\$$TMP_DOCKER_CA_CERT
@@ -169,9 +169,9 @@ deployment-prod:
         - echo "$DOCKER_CA_CERT_VARIABLE" > $DOCKER_CERT_PATH/ca.pem
         - echo "$DOCKER_CLIENT_CERT_VARIABLE" > $DOCKER_CERT_PATH/cert.pem
         - echo "$DOCKER_CLIENT_KEY_VARIABLE" > $DOCKER_CERT_PATH/key.pem
-    script:  
+    script:
         - echo $REGISTRY_PASSWORD | docker login $REGISTRY -u $REGISTRY_USERNAME --password-stdin
-        - docker pull $REGISTRY/ci-builds/$CI_COMMIT_SHA:latest 
+        - docker pull $REGISTRY/ci-builds/$CI_COMMIT_SHA:latest
         - docker tag $REGISTRY/ci-builds/$CI_COMMIT_SHA:latest  $MODIFIED_IMAGE_FULL
         - cd $MODIFIED_IMAGE
         - if [[ $(docker container ls --format "{{.Names}}" | grep $CONTAINER_NAME) ]]; then docker stop $CONTAINER_NAME | xargs docker rm; fi
@@ -189,4 +189,4 @@ deployment-prod:
         refs:
             - master
             - dev-ci
-    when: manual
\ No newline at end of file
+    when: manual