add set-ubuntu-mirror action that we can use to globally switch to a different mirror

diff --git a/set-ubuntu-mirror/action.yml b/set-ubuntu-mirror/action.yml
new file mode 100644 (file)
index 0000000..8263365
--- /dev/null
+++ b/set-ubuntu-mirror/action.yml
@@ -0,0 +1,8 @@
+name: 'choose Ubuntu mirror for PowerDNS builds in Github Actions'
+runs:
+  using: "composite"
+  steps:
+    - run: echo not changing mirror, using default Azure mirror
+      shell: bash
+    #- run: sudo sed -i 's/azure\.archive\.ubuntu\.com/mirror.leaseweb.net/' /etc/apt/sources.list
+    #  shell: bash