Update 1.9 branch for Discord

.github/ISSUE_TEMPLATE.md

@@ -19,4 +19,4 @@
 > **Note:** Stale issues will be automatically closed after a period of six months with no activity. 
 > To ensure critical issues are not closed, tag them with the Github `pinned` tag.
 > If you are a community member and not a maintainer please escalate this issue to maintainers via
-> [GIS StackExchange](https://gis.stackexchange.com/questions/tagged/open-data-cube) or [Slack](http://slack.opendatacube.org).
+> [GIS StackExchange](https://gis.stackexchange.com/questions/tagged/open-data-cube) or [Discord](https://discord.com/invite/4hhBQVas5U).

CONTRIBUTING.md

@@ -3,7 +3,7 @@
 Firstly, thank you for contributing! We are very grateful for your assistance in improving the Open Data Cube.
 
 When contributing to this repository, please first discuss the change you wish to make via an issue,
-Slack, or any other method with the owners of this repository before proposing a change.
+Discord, or any other method with the owners of this repository before proposing a change.
 
 We have a [code of conduct](code-of-conduct.md), so please follow it in all your interactions with the project.
 
@@ -40,5 +40,5 @@ and consider major enhancements, and there are a number of [current and past enh
 In case you haven't found them yet, please checkout the following resources:
 
 * [Documentation](https://datacube-core.readthedocs.io/en/latest/)
-* [Slack](http://slack.opendatacube.org)
+* [Discord](https://discord.com/invite/4hhBQVas5U)
 * [GIS Stack Exchange](https://gis.stackexchange.com/questions/tagged/open-data-cube).

README.rst

@@ -13,6 +13,10 @@ Open Data Cube Core
     :alt: Documentation Status
     :target: http://datacube-core.readthedocs.org/en/latest/
 
+.. image:: https://img.shields.io/discord/1212501566326571070?label=Discord&logo=discord&logoColor=white&color=7289DA)](https://discord.gg/4hhBQVas5U
+    :alt: Discord
+    :target: https://discord.com/invite/4hhBQVas5U
+
 Overview
 ========
 
@@ -27,7 +31,7 @@ Documentation
 See the `user guide <http://datacube-core.readthedocs.io/en/latest/>`__ for
 installation and usage of the datacube, and for documentation of the API.
 
-`Join our Slack <http://slack.opendatacube.org>`__ if you need help
+`Join our Discord <https://discord.com/invite/4hhBQVas5U>`__ if you need help
 setting up or using the Open Data Cube.
 
 Please help us to keep the Open Data Cube community open and inclusive by

docs/about/release_process.rst

@@ -1,7 +1,7 @@
 Release Process
 ***************
 
-#. Decide to do a release, and check with regular contributors on Slack that
+#. Decide to do a release, and check with regular contributors on `Discord <https://discord.com/invite/4hhBQVas5U>`_ that
    they don't have anything pending.
 
 #. Ensure version pins in setup.py and conda-environment.yml are in sync and up to date.

docs/conf.py

@@ -130,9 +130,9 @@
             "icon": "fab fa-github",
         },
         {
-            "name": "Slack",
-            "url": "http://slack.opendatacube.org/",
-            "icon": "fab fa-slack",
+            "name": "Discord",
+            "url": "https://discord.com/invite/4hhBQVas5U",
+            "icon": "fab fa-discord",
         },
     ],
 }