Restore sprockets

Gemfile

@@ -45,9 +45,16 @@ gem("cache_with_locale")
 # solid_queue for jobs
 gem("solid_queue")
 
+# sprockets for asset compilation and versioning.
+# Needed by gem bootstrap-sass, but not bootstrap (v4+)
+gem("sprockets-rails")
+# Fix a version problem betw stimulus and sprockets. (not sprockets-rails)
+# Delete this dependency declaration if the issue gets resolved:
+# https://github.com/hotwired/stimulus-rails/issues/108
+gem("sprockets", "~>4.2.1")
 # Compile SCSS for stylesheets
 gem("dartsass-rails")
-# Use bootstrap style generator
+# Bootstrap 3 SCSS and JS
 gem("bootstrap-sass")
 # Use Terser as compressor for JavaScript assets
 gem("terser")

Gemfile.lock

@@ -325,6 +325,13 @@ GEM
     sorted_set (1.0.3)
       rbtree
       set (~> 1.0)
+    sprockets (4.2.1)
+      concurrent-ruby (~> 1.0)
+      rack (>= 2.2.4, < 4)
+    sprockets-rails (3.4.2)
+      actionpack (>= 5.2)
+      activesupport (>= 5.2)
+      sprockets (>= 3.0.0)
     stimulus-rails (1.3.3)
       railties (>= 6.0.0)
     stringio (3.1.0)
@@ -427,6 +434,8 @@ DEPENDENCIES
   solid_cache
   solid_queue
   sorted_set
+  sprockets (~> 4.2.1)
+  sprockets-rails
   stimulus-rails
   terser
   trilogy