diff --git a/README.md b/README.md
index 564b833..13e20ac 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,10 @@ so:
 
 1. Make sure [Docker Compose is installed][1] and Docker is running (included in
    Docker Desktop)
-3. Run `docker compose up` and wait until 389ds announces its successful start
-   in the log output
+3. Run `docker compose up --build` and wait until all services have started
+   (389ds might take an extra minute to be ready). This will take a while when
+   running for the first time, so you might want to do something else in the
+   meantime.
 4. `docker-compose exec ldap dsconf localhost backend create --suffix="dc=kosmos,dc=org" --be-name="dev"`
 5. `docker compose run web rails ldap:setup`
 6. `docker compose run web rails db:setup`
@@ -28,38 +30,44 @@ have the password "user is user".
 
 ### Rails app
 
+_Note: when using Docker Compose, prefix the following commands with `docker-compose
+run web`._
+
 Installing dependencies:
 
     bundle install
     yarn install
 
-Setting up local database (SQLite):
+Migrating the local database (after schema changes):
 
-    bundle exec rails db:create
     bundle exec rails db:migrate
 
-Running the dev server and auto-building CSS files on change:
+Running the dev server, and auto-building CSS files on change _(automatic with Docker Compose)_:
 
     bin/dev
 
-Running the background workers (requires Redis):
+Running the background workers (requires Redis) _(automatic with Docker Compose)_:
 
     bundle exec sidekiq -C config/sidekiq.yml
 
-Running all specs:
+Running the test suite:
 
     bundle exec rspec
 
-### Docker (Compose)
+Running the test suite with Docker Compose requires overriding the Rails
+environment:
 
-There is a working Docker Compose config file, which define a number of services including
-an app server for Rails as well as a local 389ds (LDAP) server.
+    docker-compose run -e "RAILS_ENV=test" web rspec
 
-For Rails developers, you probably just want to start the LDAP server: `docker-compose up ldap`, 
-listening on port 389 on your machine. 
+### Docker Compose
 
-You can pick and choose your services adding them by name (listed in `docker-compose.yml`) at 
-the end of the docker compose command. eg. `docker compose up ldap redis`
+Services/containers are configured in `docker-compose.yml`.
+
+You can run services selectively, for example if you want to run the Rails app
+and test suite on the host machine. Just add the service names of the
+containers you want to run to the `up` command, like so:
+
+    docker-compose up ldap redis
 
 #### LDAP server
 
@@ -76,13 +84,15 @@ Now you can seed the back-end with data using this Rails task:
 The setup task will first delete any existing entries in the directory tree
 ("dc=kosmos,dc=org"), and then create our development entries.
 
-Note that all 389ds data is stored in `tmp/389ds`. So if you want to start over
-with a fresh installation, delete both that directory as well as the container.
+Note that all 389ds data is stored in the `389ds-data` volume. So if you want
+to start over with a fresh installation, delete both that volume as well as the
+container.
 
-#### Minio / RS
+#### Minio / remoteStorage
 
 If you want to run remoteStorage accounts locally, you will have to create the
-respective bucket first:
+respective bucket first. With the `minio` container running (run by default
+when using Docker Compose), follow these steps:
 
 * `docker compose up web redis minio liquor-cabinet`
 * Head to http://localhost:9001 and log in with user `minioadmin`, password
diff --git a/app/controllers/admin/settings/registrations_controller.rb b/app/controllers/admin/settings/registrations_controller.rb
index 1d888a5..4c6cb83 100644
--- a/app/controllers/admin/settings/registrations_controller.rb
+++ b/app/controllers/admin/settings/registrations_controller.rb
@@ -1,8 +1,8 @@
 class Admin::Settings::RegistrationsController < Admin::SettingsController
-  def index
+  def show
   end
 
-  def create
+  def update
     update_settings
 
     redirect_to admin_settings_registrations_path, flash: {
diff --git a/app/controllers/admin/settings/services_controller.rb b/app/controllers/admin/settings/services_controller.rb
index a228f5e..95a01b3 100644
--- a/app/controllers/admin/settings/services_controller.rb
+++ b/app/controllers/admin/settings/services_controller.rb
@@ -1,19 +1,32 @@
 class Admin::Settings::ServicesController < Admin::SettingsController
-  def index
-    @service = params[:s]
+  before_action :set_service, only: [:show, :update]
 
-    if @service.blank?
-      redirect_to admin_settings_services_path(params: { s: "btcpay" })
-    end
+  def index
+    redirect_to admin_settings_service_path("btcpay")
   end
 
-  def create
-    service = params.require(:service)
+  def show
+  end
 
+  def update
     update_settings
 
-    redirect_to admin_settings_services_path(params: { s: service }), flash: {
+    redirect_to admin_settings_service_path(@service), flash: {
       success: "Settings saved"
     }
   end
+
+  private
+
+    def set_subsection
+      @subsection = "services"
+    end
+
+    def set_service
+      @service = params[:service]
+
+      if @service.blank?
+        redirect_to admin_settings_services_path and return
+      end
+    end
 end
diff --git a/app/controllers/admin/settings_controller.rb b/app/controllers/admin/settings_controller.rb
index 8a168b1..0ac029b 100644
--- a/app/controllers/admin/settings_controller.rb
+++ b/app/controllers/admin/settings_controller.rb
@@ -20,7 +20,7 @@ class Admin::SettingsController < Admin::BaseController
     end
 
     if @errors.any?
-      render :index and return
+      render :show and return
     end
 
     changed_keys.each do |key|
diff --git a/app/views/admin/settings/registrations/index.html.erb b/app/views/admin/settings/registrations/show.html.erb
similarity index 97%
rename from app/views/admin/settings/registrations/index.html.erb
rename to app/views/admin/settings/registrations/show.html.erb
index 90b67af..0028c15 100644
--- a/app/views/admin/settings/registrations/index.html.erb
+++ b/app/views/admin/settings/registrations/show.html.erb
@@ -1,7 +1,7 @@
 <%= render HeaderComponent.new(title: "Settings") %>
 
 <%= render MainWithSidenavComponent.new(sidenav_partial: 'shared/admin_sidenav_settings') do %>
-  <%= form_for(Setting.new, url: admin_settings_registrations_path) do |f| %>
+  <%= form_for(Setting.new, url: admin_settings_registrations_path, method: :put) do |f| %>
     <section>
       <h3>Registrations</h3>
 
diff --git a/app/views/admin/settings/services/index.html.erb b/app/views/admin/settings/services/show.html.erb
similarity index 85%
rename from app/views/admin/settings/services/index.html.erb
rename to app/views/admin/settings/services/show.html.erb
index f63653d..97db9dc 100644
--- a/app/views/admin/settings/services/index.html.erb
+++ b/app/views/admin/settings/services/show.html.erb
@@ -1,9 +1,7 @@
 <%= render HeaderComponent.new(title: "Settings") %>
 
 <%= render MainWithSidenavComponent.new(sidenav_partial: 'shared/admin_sidenav_settings') do %>
-  <%= form_for(Setting.new, url: admin_settings_services_path) do |f| %>
-    <%= hidden_field_tag :service, @service %>
-
+  <%= form_for(Setting.new, url: admin_settings_service_path(@service), method: :put) do |f| %>
     <% if @errors && @errors.any? %>
       <section>
         <%= render partial: "admin/settings/errors", locals: { errors: @errors } %>
diff --git a/app/views/shared/_admin_sidenav_settings.html.erb b/app/views/shared/_admin_sidenav_settings.html.erb
index 387cd9b..48c5ced 100644
--- a/app/views/shared/_admin_sidenav_settings.html.erb
+++ b/app/views/shared/_admin_sidenav_settings.html.erb
@@ -4,9 +4,9 @@
 ) %>
 <%= render SidenavLinkComponent.new(
   name: "Services", path: admin_settings_services_path, icon: "grid",
-  active: current_page?(admin_settings_services_path)
+  active: controller_name == "services"
 ) %>
-<% if current_page?(admin_settings_services_path) %>
+<% if controller_name == "services" %>
   <%= render partial: "shared/admin_sidenav_settings_services"  %>
 <% end %>
 <%= render SidenavLinkComponent.new(
diff --git a/app/views/shared/_admin_sidenav_settings_services.html.erb b/app/views/shared/_admin_sidenav_settings_services.html.erb
index a69f3cc..e4ab082 100644
--- a/app/views/shared/_admin_sidenav_settings_services.html.erb
+++ b/app/views/shared/_admin_sidenav_settings_services.html.erb
@@ -1,77 +1,77 @@
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "BTCPay",
-  path: admin_settings_services_path(params: { s: "btcpay" }),
+  path: admin_settings_service_path("btcpay"),
   text_icon: Setting.btcpay_enabled? ? "◉" : "○",
-  active: current_page?(admin_settings_services_path(params: { s: "btcpay" })),
+  active: current_page?(admin_settings_service_path("btcpay")),
 ) %>
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "Discourse",
-  path: admin_settings_services_path(params: { s: "discourse" }),
+  path: admin_settings_service_path("discourse"),
   text_icon: Setting.discourse_enabled? ? "◉" : "○",
-  active: current_page?(admin_settings_services_path(params: { s: "discourse" })),
+  active: current_page?(admin_settings_service_path("discourse")),
 ) %>
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "Drone CI",
-  path: admin_settings_services_path(params: { s: "droneci" }),
+  path: admin_settings_service_path("droneci"),
   text_icon: Setting.droneci_enabled? ? "◉" : "○",
-  active: current_page?(admin_settings_services_path(params: { s: "droneci" })),
+  active: current_page?(admin_settings_service_path("droneci")),
 ) %>
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "E-Mail",
-  path: admin_settings_services_path(params: { s: "email" }),
+  path: admin_settings_service_path("email"),
   text_icon: Setting.email_enabled? ? "◉" : "○",
   active: current_page?(admin_settings_services_path(params: { s: "email" })),
 ) %>
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "ejabberd",
-  path: admin_settings_services_path(params: { s: "ejabberd" }),
+  path: admin_settings_service_path("ejabberd"),
   text_icon: Setting.ejabberd_enabled? ? "◉" : "○",
-  active: current_page?(admin_settings_services_path(params: { s: "ejabberd" })),
+  active: current_page?(admin_settings_service_path("ejabberd")),
 ) %>
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "Gitea",
-  path: admin_settings_services_path(params: { s: "gitea" }),
+  path: admin_settings_service_path("gitea"),
   text_icon: Setting.gitea_enabled? ? "◉" : "○",
-  active: current_page?(admin_settings_services_path(params: { s: "gitea" })),
+  active: current_page?(admin_settings_service_path("gitea")),
 ) %>
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "LNDHub",
-  path: admin_settings_services_path(params: { s: "lndhub" }),
+  path: admin_settings_service_path("lndhub"),
   text_icon: Setting.lndhub_enabled? ? "◉" : "○",
-  active: current_page?(admin_settings_services_path(params: { s: "lndhub" })),
+  active: current_page?(admin_settings_service_path("lndhub")),
 ) %>
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "Mastodon",
-  path: admin_settings_services_path(params: { s: "mastodon" }),
+  path: admin_settings_service_path("mastodon"),
   text_icon: Setting.mastodon_enabled? ? "◉" : "○",
-  active: current_page?(admin_settings_services_path(params: { s: "mastodon" })),
+  active: current_page?(admin_settings_service_path("mastodon")),
 ) %>
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "MediaWiki",
-  path: admin_settings_services_path(params: { s: "mediawiki" }),
+  path: admin_settings_service_path("mediawiki"),
   text_icon: Setting.mediawiki_enabled? ? "◉" : "○",
-  active: current_page?(admin_settings_services_path(params: { s: "mediawiki" })),
+  active: current_page?(admin_settings_service_path("mediawiki")),
 ) %>
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "Nostr",
-  path: admin_settings_services_path(params: { s: "nostr" }),
+  path: admin_settings_service_path("nostr"),
   text_icon: Setting.nostr_enabled? ? "◉" : "○",
-  active: current_page?(admin_settings_services_path(params: { s: "nostr" })),
+  active: current_page?(admin_settings_service_path("nostr")),
 ) %>
 <%= render SidenavLinkComponent.new(
   level: 2,
   name: "RemoteStorage",
-  path: admin_settings_services_path(params: { s: "remotestorage" }),
+  path: admin_settings_service_path("remotestorage"),
   text_icon: Setting.remotestorage_enabled? ? "◉" : "○",
-  active: current_page?(admin_settings_services_path(params: { s: "remotestorage" })),
+  active: current_page?(admin_settings_service_path("remotestorage")),
 ) %>
diff --git a/config/environments/test.rb b/config/environments/test.rb
index a459967..65473dd 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -52,10 +52,9 @@ Rails.application.configure do
 
   config.active_job.queue_adapter = :test
 
-  if ENV["S3_ENABLED"]
+  if ENV["S3_ENABLED"] && ENV["S3_ENABLED"].to_s != "false"
     config.active_storage.service = :s3
   else
-    # Store attachments on the local disk (in ./tmp)
-    config.active_storage.service = :test
+    config.active_storage.service = :local
   end
 end
diff --git a/config/routes.rb b/config/routes.rb
index 4307f9e..47b5988 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -97,8 +97,8 @@ Rails.application.routes.draw do
     end
 
     namespace :settings do
-      resources 'registrations', only: ['index', 'create']
-      resources 'services', only: ['index', 'create']
+      resource 'registrations', only: ['show', 'update']
+      resources 'services', param: 'service', only: ['index', 'show', 'update']
     end
   end
 
diff --git a/db/schema.rb b/db/schema.rb
index dd267df..934c5f3 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -60,6 +60,7 @@ ActiveRecord::Schema[7.1].define(version: 2024_02_16_124640) do
     t.string "payment_method"
     t.string "btcpay_invoice_id"
     t.string "payment_status"
+    t.index ["payment_status"], name: "index_donations_on_payment_status"
     t.index ["user_id"], name: "index_donations_on_user_id"
   end
 
diff --git a/spec/features/admin/settings_spec.rb b/spec/features/admin/settings_spec.rb
index 01a43f4..91d8ffe 100644
--- a/spec/features/admin/settings_spec.rb
+++ b/spec/features/admin/settings_spec.rb
@@ -23,35 +23,35 @@ RSpec.describe 'Admin/global settings', type: :feature do
     scenario "Opening service settings shows page for first service" do
       visit admin_settings_services_path
 
-      expect(current_url).to eq(admin_settings_services_url(params: { s: "btcpay" }))
+      expect(current_url).to eq(admin_settings_service_url("btcpay"))
     end
 
     scenario "View service settings" do
-      visit admin_settings_services_path(params: { s: "ejabberd" })
+      visit admin_settings_service_path("ejabberd")
 
       expect(page).to have_content("Enable ejabberd integration")
       expect(page).to have_field("API URL", with: "http://xmpp.example.com/api")
     end
 
     scenario "Disable a service integration" do
-      visit admin_settings_services_path(params: { s: "ejabberd" })
+      visit admin_settings_service_path("ejabberd")
       expect(page).to have_checked_field("setting[ejabberd_enabled]")
 
       uncheck "setting[ejabberd_enabled]"
       click_button "Save"
 
-      expect(current_url).to eq(admin_settings_services_url(params: { s: "ejabberd" }))
+      expect(current_url).to eq(admin_settings_service_url("ejabberd"))
       expect(page).to_not have_checked_field("setting[ejabberd_enabled]")
       expect(page).to_not have_field("API URL", disabled: true)
     end
 
     scenario "Resettable fields" do
-      visit admin_settings_services_path(params: { s: "ejabberd" })
+      visit admin_settings_service_path("ejabberd")
       expect(page).to have_field("API URL", with: "http://xmpp.example.com/api")
       expect(page).to_not have_css('input#setting_ejabberd_api_url+button')
 
       Setting.ejabberd_api_url = "http://example.com/foo"
-      visit admin_settings_services_path(params: { s: "ejabberd" })
+      visit admin_settings_service_path("ejabberd")
       expect(page).to have_field("API URL", with: "http://example.com/foo")
       expect(page).to have_css('input#setting_ejabberd_api_url+button')
     end
diff --git a/spec/requests/webfinger_spec.rb b/spec/requests/webfinger_spec.rb
index 1dcdfa3..27cd361 100644
--- a/spec/requests/webfinger_spec.rb
+++ b/spec/requests/webfinger_spec.rb
@@ -15,7 +15,7 @@ RSpec.describe "WebFinger", type: :request do
           res = JSON.parse(response.body)
           rs_link = res["links"].find {|l| l["rel"] == "http://tools.ietf.org/id/draft-dejong-remotestorage"}
 
-          expect(rs_link["href"]).to eql("https://storage.kosmos.org/tony")
+          expect(rs_link["href"]).to eql("#{Setting.rs_storage_url}/tony")
 
           oauth_url = rs_link["properties"]["http://tools.ietf.org/html/rfc6749#section-4.2"]
           expect(oauth_url).to eql("http://www.example.com/rs/oauth/tony")