[TESTS] Add php-gd for ci

.gitlab-ci.yml

@@ -34,6 +34,7 @@ job_php-7.2:
   image: php:7.2-apache
   stage: test
   script:
+    - apt-get install php7.2-gd
     - mkdir -p /opt/maarch/docservers/indexes/{letterbox_coll,attachments_coll,version_attachments_coll}
     - mkdir -p /opt/maarch/docservers/{ai,manual,manual_attachments,templates}
     - mkdir -p /opt/maarch/docservers/{convert_attachments,convert_attachments_version,convert_mlb}
@@ -60,6 +61,7 @@ job_php-7.1:
   image: php:7.1-apache
   stage: test
   script:
+    - apt-get install php7.1-gd
     - mkdir -p /opt/maarch/docservers/indexes/{letterbox_coll,attachments_coll,version_attachments_coll}
     - mkdir -p /opt/maarch/docservers/{ai,manual,manual_attachments,templates}
     - mkdir -p /opt/maarch/docservers/{convert_attachments,convert_attachments_version,convert_mlb}
@@ -86,6 +88,7 @@ job_php-7.0:
   image: php:7.0-apache
   stage: test
   script:
+    - apt-get install php7.0-gd
     - mkdir -p /opt/maarch/docservers/indexes/{letterbox_coll,attachments_coll,version_attachments_coll}
     - mkdir -p /opt/maarch/docservers/{ai,manual,manual_attachments,templates}
     - mkdir -p /opt/maarch/docservers/{convert_attachments,convert_attachments_version,convert_mlb}