Build and publish docker images for development builds

Author: wille

.github/workflows/release.yml

@@ -3,10 +3,13 @@ name: Publish Docker image
 on:
   release:
     types: [published]
+  push:
+    branches:
+      - master
 
 jobs:
-  push_to_registries:
-    name: Push Docker image to multiple registries
+  build:
+    name: Build Docker image
     runs-on: ubuntu-latest
     permissions:
       packages: write

internal/provider.go

@@ -44,8 +44,6 @@ func (e *Provider) GetTimeout() time.Duration {
 	return 10 * time.Second
 }
 
-const highestBackoff = 4 * time.Minute
-
 func nextAttemptDelay(attempt int) time.Duration {
 	switch {
 	case attempt < 5: