Add content to service page about Helmholtz GitLab

* Explain why GitLab has been chosen.
* Explain most useful GitLab features.
* Introduce Helpdesk to get in touch.

services/helmholtzgitlab.html

@@ -12,18 +12,27 @@ excerpt: >-
 ---
 
 <p>
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+    The HIFIS team offers IT services to all Helmholtz communities
+    which enable scientists to do research and develop research software in
+    tight collaboration with other scientists from within Helmholtz.
+    Offering a sophisticated Software Project Management Platform is an
+    important prerequisite to achieve this.
+    The Software Project Management Platform GitLab has already become a
+    de-facto standard for many Helmholtz centers in the past years.
+    Most of the centers offer GitLab already as a service to their
+    scientists.
+    In order to bundle resources and foster cross-center collaboration
+    HIFIS decided to offer GitLab to all Helmholtz disregarding the center
+    affiliation of scientists.
+    The benefits and synergies of using GitLab are manifold.
+    Nowadays, research software needs to be open, transparent, reproducible,
+    accessible, findable, reusable just to name a few desired properties.
+    We believe that a full-fledged feature-rich open-source software like
+    GitLab is the right tool to support scientists to develop such software
+    that adhere to these properties.
 </p>
 
-<h1>Features of Helmholtz GitLab Service</h1>
+<h1>Features of the Helmholtz GitLab Service</h1>
 
 <div class="image-block">
     <img
@@ -34,15 +43,27 @@ excerpt: >-
     <div>
         <h3>Version Control with Git</h3>
         <p>
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+            One reason for many Helmholtz research centers to chose GitLab as
+            the right tool might be the popularity of the Version Control System
+            Git.
+            GitLab is using Git under the hood and Git and GitLab interact
+            with each other just seamless.
+            While it is possible to use Git only locally or GitLab only remotely
+            the most benefits arise by combining those two.
+            With Version Control scientists are able to keep track of their
+            changes they make during research software development due to the
+            fact that Git stores the complete history of changes in the
+            respective Git repository.
+            One can jump back and forth in the history and for example inspect
+            previous versions or even restore previous versions of the software.
+            GitLab or any other Git-based Software Project Management Platform
+            offer a central point to exchange code and ideas with others and
+            render close and fruitful collaboration between scientists possible.
+            But what if a scientist already uses another Git-based Software
+            Project Management Platform?
+            That's perfect, no worries.
+            GitLab offers an import wizard with which researchers can migrate
+            their remote Git repositories just easily if the necessity arises.
         </p>
     </div>
 </div>
@@ -56,15 +77,21 @@ excerpt: >-
     <div>
         <h3>Project Management with GitLab</h3>
         <p>
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+            Collaboration is such a necessity mentioned in the previous section.
+            Today, there is literally no research project that is not driven
+            by collaboration with other researchers.
+            Hence, project management is an important task and duty of
+            researchers in order to make good progress in their research
+            projects.
+            GitLab is a specialized tool to support software project management.
+            It offers Groups, Projects, Issue Trackers, Issue/Kanban Boards,
+            Milestones, Labels, Branches, Merge Requests, Review Apps among
+            many other useful features.
+            This platform is very open in terms of supported workflows in
+            research software projects and can be adapted to almost any
+            practical software development workflow you may think of.
+            It is just so easy to see and keep track of who is doing what and
+            how much progress is made in a project.
         </p>
     </div>
 </div>
@@ -72,21 +99,30 @@ excerpt: >-
 <div class="image-block">
     <img
         class="help-image left"
-        alt="A software developer monitoring some systems executing automated tasks."
+        alt="A software developer watching Continuous Integration pipeline stages."
         src="{{ site.directory.images | relative_url }}/services/undraw_check_boxes_m3d0.svg"
     />
     <div>
         <h3>GitLab Continuous Integration</h3>
         <p>
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+            Continuous Integration (CI) is one of the key features we would like
+            to promote and introduce to scientists new to these tools.
+            Almost every software product benefits from automated tasks that
+            may be triggered when interacting with GitLab like when scientists
+            push new changes to GitLab.
+            So called CI pipelines may be triggered that for example
+            automatically build, test and finally deploy the software product
+            to a container or package registry or some staging or production
+            environment on which simulations may run.
+            Often these automated task are used as quality gates which
+            need to be passed successfully in order to be able to integrate
+            the code change into some mainline.
+            Developers are able to "integrate" their contributions
+            "continuously" and often because a high level of automation done
+            in the background supersedes many of the time consuming tasks that
+            need to be done manually otherwise.
+            Thus, researchers can focus on doing research and not on doing
+            tedious tasks again and again.
         </p>
     </div>
 </div>
@@ -100,15 +136,11 @@ excerpt: >-
     <div>
         <h3>GitLab Container Registry</h3>
         <p>
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+            Containers have become very popular, Gitlab takes that into account
+            by offering a so called Container Registry that is very similar
+            to Docker Hub and is able to store Docker images among others.
+            Once research software developers build their own images they can
+            be stored centrally in such a registry for later use.
         </p>
     </div>
 </div>
@@ -116,21 +148,17 @@ excerpt: >-
 <div class="image-block">
     <img
         class="help-image left"
-        alt="A software developer with a pile of packages."
+        alt="A software developer inspecting some packages."
         src="{{ site.directory.images | relative_url }}/services/undraw_order_delivered_p6ba.svg"
     />
     <div>
         <h3>GitLab Package Registry</h3>
         <p>
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+            Package Registries exist already for a long time, GitLab supports
+            the most prominent candidates like PyPI, Conan, Maven, NPM,
+            Composer, etc. so that packages can be stored independently from
+            these public registries.
+
         </p>
     </div>
 </div>
@@ -144,15 +172,14 @@ excerpt: >-
     <div>
         <h3>GitLab Pages</h3>
         <p>
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+            Additionally, there is a feature called GitLab Pages that can be
+            used to publish static web sites or software project documentation.
+            In the same way like with other features, e.g. GitLab Container
+            and Package Registries, GitLab Pages can be used during automation
+            with CI pipelines.
+            That means each time there is a contribution to your project
+            the static web site or software project documentation is built
+            anew and made accessible to anyone with the right permissions.
         </p>
     </div>
 </div>
@@ -166,15 +193,12 @@ excerpt: >-
     <div>
         <h3>HIFIS Helpdesk</h3>
         <p>
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+            Finally, we would like to suggest our HIFIS Helpdesk to our dear
+            fellows in case you would like to contact us regarding questions
+            you have when using GitLab, issues and bugs to report, or ideas
+            to be shared on how to improve the service.
+            Please visit our helpdesk or write us an email.
+            Thank you very much for your mindful contribution.
 
             {% include contact_us/mini.html %}
             {% include helpdesk/mini.html %}