diff --git a/Dockerfile b/Dockerfile
index 95479ce2..c999b3d4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.7
+FROM ruby:2.6
 
 RUN supercronicUrl=https://github.com/aptible/supercronic/releases/download/v0.1.3/supercronic-linux-amd64 && \
     supercronicBin=/usr/local/bin/supercronic && \
@@ -15,16 +15,13 @@ ENV PORT=3000 \
 
 WORKDIR /usr/src/app
 
-COPY Gemfile Gemfile.lock ./
-COPY plugins/ ./plugins
-COPY config/ ./config
+COPY . ./
 
 # install dependencies and generate crontab
 RUN buildDeps='libmagic-dev' && \
     apt-get update && \
     apt-get install --no-install-recommends -y $buildDeps && \
     echo 'gem: --no-document' >> ~/.gemrc && \
-    gem install bundler && \
     bundle config build.nokogiri "--use-system-libraries" && \
     bundle install --deployment --without development test -j 4 && \
     apt-get purge -y --auto-remove $buildDeps && \
@@ -32,8 +29,6 @@ RUN buildDeps='libmagic-dev' && \
     \
     bundle exec whenever >crontab
 
-COPY . ./
-
 # compile assets with temporary mysql server
 RUN export DATABASE_URL=mysql2://localhost/temp?encoding=utf8 && \
     export SECRET_KEY_BASE=thisisnotimportantnow && \
diff --git a/Gemfile b/Gemfile
index 75a515cb..948ef685 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,6 +7,7 @@ gem 'mail', '~> 2.7.1' # bug with mail 2.8.0 https://github.com/mikel/mail/issue
 
 gem 'sassc-rails'
 gem 'less-rails'
+gem 'uglifier'
 # See https://github.com/sstephenson/execjs#readme for more supported runtimes
 gem 'therubyracer', platforms: :ruby
 
@@ -126,7 +127,3 @@ group :test do
   gem 'rswag-specs'
   gem 'hashie', '~> 3.4.6', require: false # https://github.com/westfieldlabs/apivore/issues/114
 end
-
-gem "importmap-rails", "~> 1.1"
-
-gem "terser", "~> 1.1"
diff --git a/Gemfile.lock b/Gemfile.lock
index ad8f2c0f..0c9eaf3d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -264,9 +264,6 @@ GEM
     i18n-spec (0.6.0)
       iso
     ice_cube (0.16.4)
-    importmap-rails (1.1.5)
-      actionpack (>= 6.0.0)
-      railties (>= 6.0.0)
     inherited_resources (1.13.1)
       actionpack (>= 5.2, < 7.1)
       has_scope (~> 0.6)
@@ -556,8 +553,6 @@ GEM
       sqlite3 (>= 1.3.3)
     table_print (1.5.7)
     temple (0.9.1)
-    terser (1.1.13)
-      execjs (>= 0.3.0, < 3)
     therubyracer (0.12.3)
       libv8 (~> 3.16.14.15)
       ref
@@ -578,6 +573,8 @@ GEM
       unf (~> 0.1.0)
     tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
+    uglifier (4.2.0)
+      execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.8.2)
@@ -641,7 +638,6 @@ DEPENDENCIES
   i18n-js (~> 3.0.0.rc8)
   i18n-spec
   ice_cube
-  importmap-rails (~> 1.1)
   inherited_resources
   jquery-rails
   kaminari
@@ -693,11 +689,11 @@ DEPENDENCIES
   sprockets (< 4)
   sqlite3 (~> 1.3.6)
   table_print
-  terser (~> 1.1)
   therubyracer
   twitter-bootstrap-rails (~> 2.2.8)
+  uglifier
   web-console
   whenever
 
 BUNDLED WITH
-   2.4.5
+   2.4.2
diff --git a/app/assets/javascripts/application_legacy.js b/app/assets/javascripts/application.js
similarity index 100%
rename from app/assets/javascripts/application_legacy.js
rename to app/assets/javascripts/application.js
diff --git a/app/controllers/finance/financial_transactions_controller.rb b/app/controllers/finance/financial_transactions_controller.rb
index e0c53e19..930acebe 100644
--- a/app/controllers/finance/financial_transactions_controller.rb
+++ b/app/controllers/finance/financial_transactions_controller.rb
@@ -18,7 +18,7 @@ class Finance::FinancialTransactionsController < ApplicationController
       sort = "created_on DESC"
     end
 
-    @q = FinancialTransaction.ransack(params[:q])
+    @q = FinancialTransaction.search(params[:q])
     @financial_transactions_all = @q.result(distinct: true).includes(:user).order(sort)
     @financial_transactions_all = @financial_transactions_all.visible unless params[:show_hidden]
     @financial_transactions_all = @financial_transactions_all.where(ordergroup_id: @ordergroup.id) if @ordergroup
diff --git a/app/javascript/application.js b/app/javascript/application.js
deleted file mode 100644
index beff742e..00000000
--- a/app/javascript/application.js
+++ /dev/null
@@ -1 +0,0 @@
-// Configure your import map in config/importmap.rb. Read more: https://github.com/rails/importmap-rails
diff --git a/app/models/group_order.rb b/app/models/group_order.rb
index f3153c44..c789ef4e 100644
--- a/app/models/group_order.rb
+++ b/app/models/group_order.rb
@@ -32,8 +32,8 @@ class GroupOrder < ApplicationRecord
   # Generate some data for the javascript methods in ordering view
   def load_data
     data = {}
-    data[:account_balance] = ordergroup.nil? ? BigDecimal('+Infinity') : ordergroup.account_balance
-    data[:available_funds] = ordergroup.nil? ? BigDecimal('+Infinity') : ordergroup.get_available_funds(self)
+    data[:account_balance] = ordergroup.nil? ? BigDecimal.new('+Infinity') : ordergroup.account_balance
+    data[:available_funds] = ordergroup.nil? ? BigDecimal.new('+Infinity') : ordergroup.get_available_funds(self)
 
     # load prices and other stuff....
     data[:order_articles] = {}
diff --git a/app/views/layouts/_header.html.haml b/app/views/layouts/_header.html.haml
index 66e14355..974ce8f2 100644
--- a/app/views/layouts/_header.html.haml
+++ b/app/views/layouts/_header.html.haml
@@ -8,10 +8,10 @@
     = csrf_meta_tags
     = stylesheet_link_tag "application", :media => "all"
     //%link(href="images/favicon.ico" rel="shortcut icon")
+
     = yield(:head)
     = foodcoop_css_tag
 
-
   %body
     = yield
 
@@ -19,9 +19,7 @@
       Javascripts
       \==================================================
     / Placed at the end of the document so the pages load faster
-    = javascript_importmap_tags
-    = javascript_include_tag "application_legacy"
-
+    = javascript_include_tag "application"
     :javascript
       I18n.defaultLocale = "#{I18n.default_locale}";
       I18n.locale = "#{I18n.locale}";
diff --git a/bin/importmap b/bin/importmap
deleted file mode 100755
index 36502ab1..00000000
--- a/bin/importmap
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/usr/bin/env ruby
-
-require_relative "../config/application"
-require "importmap/commands"
diff --git a/config/environments/production.rb b/config/environments/production.rb
index d08234e5..d0f06b95 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -29,7 +29,7 @@ Rails.application.configure do
   config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
 
   # Compress JavaScripts and CSS.
-  config.assets.js_compressor = :terser
+  config.assets.js_compressor = :uglifier
   config.assets.css_compressor = :sass
 
   # Do not fallback to assets pipeline if a precompiled asset is missed.
diff --git a/config/importmap.rb b/config/importmap.rb
deleted file mode 100644
index 050818ab..00000000
--- a/config/importmap.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-# Pin npm packages by running ./bin/importmap
-pin "application", preload: true
\ No newline at end of file
diff --git a/config/initializers/assets.rb b/config/initializers/assets.rb
index e1c4d5fa..fe48fc34 100644
--- a/config/initializers/assets.rb
+++ b/config/initializers/assets.rb
@@ -9,4 +9,4 @@ Rails.application.config.assets.version = '1.0'
 # Precompile additional assets.
 # application.js, application.css, and all non-JS/CSS in the app/assets
 # folder are already added.
-Rails.application.config.assets.precompile += %w( application_legacy.js jquery.min.js )
+# Rails.application.config.assets.precompile += %w( admin.js admin.css )
diff --git a/config/initializers/extensions.rb b/config/initializers/extensions.rb
index 68c7c8f4..799f52e6 100644
--- a/config/initializers/extensions.rb
+++ b/config/initializers/extensions.rb
@@ -3,7 +3,7 @@ class String
   # remove comma from decimal inputs
   def self.delocalized_decimal(string)
     if !string.blank? and string.is_a?(String)
-      BigDecimal(string.sub(',', '.'))
+      BigDecimal.new(string.sub(',', '.'))
     else
       string
     end
diff --git a/docker-compose-dev.yml b/docker-compose-dev.yml
index b0a325db..5358430a 100644
--- a/docker-compose-dev.yml
+++ b/docker-compose-dev.yml
@@ -11,7 +11,7 @@ services:
     build:
       context: .
       dockerfile: Dockerfile-dev
-    platform: linux/x86_64
+      platform: linux/x86_64
     command: ./proc-start worker
     volumes:
       - bundle:/usr/local/bundle
diff --git a/plugins/current_orders/app/controllers/current_orders/articles_controller.rb b/plugins/current_orders/app/controllers/current_orders/articles_controller.rb
index ef23f332..0e4b7dd9 100644
--- a/plugins/current_orders/app/controllers/current_orders/articles_controller.rb
+++ b/plugins/current_orders/app/controllers/current_orders/articles_controller.rb
@@ -32,7 +32,7 @@ class CurrentOrders::ArticlesController < ApplicationController
     else
       @order_articles = OrderArticle.where(order_id: @current_orders.all.map(&:id))
     end
-    @q = OrderArticle.ransack(params[:q])
+    @q = OrderArticle.search(params[:q])
     @order_articles = @order_articles.ordered.merge(@q.result).includes(:article, :article_price)
     @order_article = @order_articles.where(id: params[:id]).first
   end
diff --git a/vendor/javascript/.keep b/vendor/javascript/.keep
deleted file mode 100644
index e69de29b..00000000