Add a newsletter Archetype (i.e. template for newsletters)

CONTRIBUTING.md

@@ -112,6 +112,29 @@ The `date` is provided here for example purposes only. Usually, you can leave it
 
 If not already present, a link should be added to the [site map](https://github.com/ivoa/ivoa-web/blob/main/layouts/partials/sitemap.html) pointing to the new page, or you may need to add one or more links to other parts of the site. Please consult with the site administrators if you have questions about where you might need to add or update links based on your changes.
 
+## Adding a newsletter
+
+A newsletter is a content with a fairly similar structure from one newsletter to
+another. In order to help creation of such content, it is possible to use a kind
+of template (Hugo calls this an
+[Archetype](https://gohugo.io/content-management/archetypes/)).
+One exists for newsletters.
+
+To create a newsletter:
+
+1. (Optional) Ensure Hugo is locally installed (`make install`).
+
+2. Run the following command, where `XXX` is the number of the newsletter to
+   create (e.g. `026`):
+
+   ```bash
+   ./hugo-bin/hugo new content newsletter/XXX.md
+   ```
+
+3. Edit the file `content/newsletter/XXX.md`. There are content placeholders all
+   over this file ; search for all occurences of `TBD` and you will find them.
+   Just replace them by the content you would like to have.
+
 # Pushing Changes to Github
 
 ## Committing and Pushing

archetypes/newsletter.md

@@ -0,0 +1,127 @@
+---
+date: '{{ .Date }}'
+ideal_title: "IVOA Newsletter - { TBD - Date as 'Month Year' }"
+tags:
+- news
+highlights:
+- { TBD - One highlighted fact per line, prefixed as here with a '- ' }
+---
+
+[Subscribe](http://www.ivoa.net/mailman/listinfo/ivoa-news) |
+[Newsletter archives](/newsletter/) |
+[Write to the editors](mailto:[email protected])
+
+**The International Virtual Observatory Alliance (IVOA) was formed in June 2002
+with a mission to facilitate the international coordination and collaboration
+necessary for the development and deployment of the tools, systems and
+organizational structures necessary to enable the international utilization of
+astronomical archives as an integrated and interoperating virtual observatory.
+The IVOA now comprises 20 VO programs from Argentina, Armenia, Australia,
+Brazil, Canada, Chile, China, Europe, France, Germany, Hungary, India, Italy,
+Japan, Russia, South Africa, Spain, Ukraine, the United Kingdom, and the United
+States and an inter-governmental organization (ESA). Membership is open to other
+national and international programs according to the
+[IVOA Guidelines for Participation](http://ivoa.net/Documents/latest/IVOAParticipation.html).
+You can read more about the IVOA and what we do at
+[http://ivoa.net/about/](/about/).**
+
+**What is the VO?**
+
+The Virtual Observatory (VO) aims to provide a research environment that will
+open up new possibilities for scientific research based on data discovery,
+efficient data access, and interoperability. The vision is of global astronomy
+archives connected via the VO to form a multiwavelength digital sky that can be
+searched, visualized, and analyzed in new and innovative ways. VO projects
+worldwide working toward this vision are already providing science capabilities
+with new tools and services. This newsletter, aimed at astronomers, highlights
+VO tools and technologies for doing astronomy research, recent papers, and
+upcoming events.
+
+---
+
+# IVOA NEWS
+
+
+{{< side-image image="" thumbnail="" position="left" floating="true" >}}
+
+### { TBD - TITLE }
+
+{ TBD - Comma-separated list of authors }
+
+{ TBD - Content }
+
+{{</ side-image >}}
+
+---
+
+# Schools and workshops
+
+{{< side-image image="" thumbnail="" position="right" floating="true" >}}
+
+### { TBD - TITLE }
+
+{ TBD - Comma-separated list of "authors" }
+
+{ TBD - Content }
+
+{{</ side-image >}}
+
+---
+
+# VO applications and implementation highlights
+
+{{< side-image image="" thumbnail="" position="left" floating="true" >}}
+
+### { TBD - TITLE }
+
+{ TBD - Comma-separated list of "authors" }
+
+{ TBD - Content }
+
+**More information:** { TBD - Links toward the application or related news }
+
+{{</ side-image >}}
+
+---
+
+# Some recent papers about VO-enabled science
+
+### Featured Science Publication
+
+_{ TBD - Publication title }_
+
+**{ TBD - Comma-separated list of authors }**
+
+_{ TBD - Where is it published? }_
+
+{ TBD - Abstract }
+
+DOI: { TBD - DOI (e.g. [10.1093/mnras/stab1242](https://doi.org/10.1093/mnras/stab1242) ) }
+
+### [Refereed Publications](http://sdc.cab.inta-csic.es/vopubs/jsp/result.jsp?order=pub_id&bib=&com_id=-&com=&m_in=07&y_in=2020&m_en=01&y_en=2021&submit=Submit) { TBD - Check the parameters of this URL }
+
+The full list of refereed publications from { TBD - Date as "Month Year" } to { TBD - Date as "Month Year" } can be
+found at the following
+[list](https://sdc.cab.inta-csic.es/vopubs/jsp/result.jsp?order=cit_desc&bib=&com_id=-&com=&m_in=09&y_in=2021&m_en=03&y_en=2022&submit=Submit),
+curated by the Spanish Virtual Observatory.
+
+### More Ways to Find VO-related Publications
+
+All [ADS links](https://ui.adsabs.harvard.edu/#search/q=abstract%3A%22Virtual%20Observatory%22&sort=date%20desc%2C%20bibcode%20desc)
+mentioning the "virtual observatory" in the abstract.
+
+All [refereed publications](https://ui.adsabs.harvard.edu/#search/fq=%7B!type%3Daqp%20v%3D%24fq_property%7D&fq_property=(property%3A%22refereed%22)&q=abstract%3A%22Virtual%20Observatory%22&sort=date%20desc%2C%20bibcode%20desc)
+mentioning the "virtual observatory" in the abstract.
+
+---
+
+## VO calendar
+
+* **{ TBD - Date as: Day Month Year } - { TBD - Event name }**
+
+  ({ TBD - Location (e.g. 'online', or a city and country) })
+
+  { TBD - Description }
+
+
+{{< newsletter-social-links >}}