add postgres with docker

Gemfile

@@ -2,8 +2,8 @@ source "https://rubygems.org"
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
 gem "rails", "~> 8.0.4"
-# Use sqlite3 as the database for Active Record
+# Use pg as the database for Active Record
-gem "sqlite3", ">= 2.1"
+gem "pg", "~> 1.5"
 # Use the Puma web server [https://github.com/puma/puma]
 gem "puma", ">= 5.0"
 # Build JSON APIs with ease [https://github.com/rails/jbuilder]
@@ -44,4 +44,9 @@ group :development, :test do
 
   # Omakase Ruby styling [https://github.com/rails/rubocop-rails-omakase/]
   gem "rubocop-rails-omakase", require: false
+
+  gem 'rails-erd', require: false
+
+  gem "annotaterb"
+  gem "dotenv-rails"
 end

Gemfile.lock

@@ -72,6 +72,9 @@ GEM
       securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
       uri (>= 0.13.1)
+    annotaterb (4.22.0)
+      activerecord (>= 6.0.0)
+      activesupport (>= 6.0.0)
     ast (2.4.3)
     base64 (0.3.0)
     bcrypt_pbkdf (1.1.2)
@@ -82,6 +85,7 @@ GEM
     brakeman (8.0.4)
       racc
     builder (3.3.0)
+    choice (0.2.0)
     concurrent-ruby (1.3.6)
     connection_pool (3.0.2)
     crass (1.0.6)
@@ -90,6 +94,9 @@ GEM
       irb (~> 1.10)
       reline (>= 0.3.8)
     dotenv (3.2.0)
+    dotenv-rails (3.2.0)
+      dotenv (= 3.2.0)
+      railties (>= 6.1)
     drb (2.2.3)
     ed25519 (1.4.0)
     erb (6.0.4)
@@ -173,6 +180,12 @@ GEM
     parser (3.3.11.1)
       ast (~> 2.4.1)
       racc
+    pg (1.6.3)
+    pg (1.6.3-aarch64-linux)
+    pg (1.6.3-aarch64-linux-musl)
+    pg (1.6.3-arm64-darwin)
+    pg (1.6.3-x86_64-linux)
+    pg (1.6.3-x86_64-linux-musl)
     pp (0.6.3)
       prettyprint
     prettyprint (0.2.0)
@@ -210,6 +223,11 @@ GEM
       activesupport (>= 5.0.0)
       minitest
       nokogiri (>= 1.6)
+    rails-erd (1.7.2)
+      activerecord (>= 4.2)
+      activesupport (>= 4.2)
+      choice (~> 0.2.0)
+      ruby-graphviz (~> 1.2)
     rails-html-sanitizer (1.7.0)
       loofah (~> 2.25)
       nokogiri (>= 1.15.7, != 1.16.7, != 1.16.6, != 1.16.5, != 1.16.4, != 1.16.3, != 1.16.2, != 1.16.1, != 1.16.0.rc1, != 1.16.0)
@@ -231,6 +249,7 @@ GEM
     regexp_parser (2.12.0)
     reline (0.6.3)
       io-console (~> 0.5)
+    rexml (3.4.4)
     rubocop (1.86.2)
       json (~> 2.3)
       language_server-protocol (~> 3.17.0.2)
@@ -259,6 +278,8 @@ GEM
       rubocop (>= 1.72)
       rubocop-performance (>= 1.24)
       rubocop-rails (>= 2.30)
+    ruby-graphviz (1.2.5)
+      rexml
     ruby-progressbar (1.13.0)
     securerandom (0.4.1)
     solid_cable (3.0.12)
@@ -277,13 +298,6 @@ GEM
       fugit (~> 1.11)
       railties (>= 7.1)
       thor (>= 1.3.1)
-    sqlite3 (2.9.4-aarch64-linux-gnu)
-    sqlite3 (2.9.4-aarch64-linux-musl)
-    sqlite3 (2.9.4-arm-linux-gnu)
-    sqlite3 (2.9.4-arm-linux-musl)
-    sqlite3 (2.9.4-arm64-darwin)
-    sqlite3 (2.9.4-x86_64-linux-gnu)
-    sqlite3 (2.9.4-x86_64-linux-musl)
     sshkit (1.25.0)
       base64
       logger
@@ -324,17 +338,20 @@ PLATFORMS
   x86_64-linux-musl
 
 DEPENDENCIES
+  annotaterb
   bootsnap
   brakeman
   debug
+  dotenv-rails
   kamal
+  pg (~> 1.5)
   puma (>= 5.0)
   rails (~> 8.0.4)
+  rails-erd
   rubocop-rails-omakase
   solid_cable
   solid_cache
   solid_queue
-  sqlite3 (>= 2.1)
   thruster
   tzinfo-data
 

config/database.yml

@@ -1,41 +1,20 @@
-# SQLite. Versions 3.8.0 and up are supported.
-#   gem install sqlite3
-#
-#   Ensure the SQLite 3 gem is defined in your Gemfile
-#   gem "sqlite3"
-#
 default: &default
-  adapter: sqlite3
+  adapter: postgresql
+  encoding: unicode
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
-  timeout: 5000
+  host: <%= ENV.fetch("DATABASE_HOST", "localhost") %>
+  port: <%= ENV.fetch("DATABASE_PORT", 5432) %>
+  username: <%= ENV.fetch("DATABASE_USER", "postgres") %>
+  password: <%= ENV.fetch("DATABASE_PASSWORD", "password") %>
 
 development:
   <<: *default
-  database: storage/development.sqlite3
+  database: price_point_development
 
-# Warning: The database defined as "test" will be erased and
-# re-generated from your development database when you run "rake".
-# Do not set this db to the same as development or production.
 test:
   <<: *default
-  database: storage/test.sqlite3
+  database: price_point_test
 
-
-# Store production database in the storage/ directory, which by default
-# is mounted as a persistent Docker volume in config/deploy.yml.
 production:
-  primary:
   <<: *default
-    database: storage/production.sqlite3
+  database: price_point_production
-  cache:
-    <<: *default
-    database: storage/production_cache.sqlite3
-    migrations_paths: db/cache_migrate
-  queue:
-    <<: *default
-    database: storage/production_queue.sqlite3
-    migrations_paths: db/queue_migrate
-  cable:
-    <<: *default
-    database: storage/production_cable.sqlite3
-    migrations_paths: db/cable_migrate

db/schema.rb

@@ -0,0 +1,119 @@
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# This file is the source Rails uses to define your schema when running `bin/rails
+# db:schema:load`. When creating a new database, `bin/rails db:schema:load` tends to
+# be faster and is potentially less error prone than running all of your
+# migrations from scratch. Old migrations may fail to apply correctly if those
+# migrations use external dependencies or application code.
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema[8.0].define(version: 2026_05_17_111138) do
+  # These are extensions that must be enabled in order to support this database
+  enable_extension "pg_catalog.plpgsql"
+
+  create_table "active_storage_attachments", force: :cascade do |t|
+    t.string "name", null: false
+    t.string "record_type", null: false
+    t.bigint "record_id", null: false
+    t.bigint "blob_id", null: false
+    t.datetime "created_at", null: false
+    t.index ["blob_id"], name: "index_active_storage_attachments_on_blob_id"
+    t.index ["record_type", "record_id", "name", "blob_id"], name: "index_active_storage_attachments_uniqueness", unique: true
+  end
+
+  create_table "active_storage_blobs", force: :cascade do |t|
+    t.string "key", null: false
+    t.string "filename", null: false
+    t.string "content_type"
+    t.text "metadata"
+    t.string "service_name", null: false
+    t.bigint "byte_size", null: false
+    t.string "checksum"
+    t.datetime "created_at", null: false
+    t.index ["key"], name: "index_active_storage_blobs_on_key", unique: true
+  end
+
+  create_table "active_storage_variant_records", force: :cascade do |t|
+    t.bigint "blob_id", null: false
+    t.string "variation_digest", null: false
+    t.index ["blob_id", "variation_digest"], name: "index_active_storage_variant_records_uniqueness", unique: true
+  end
+
+  create_table "admins", force: :cascade do |t|
+    t.string "name"
+    t.string "email"
+    t.string "password_digest"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["email"], name: "index_admins_on_email", unique: true
+  end
+
+  create_table "chains", force: :cascade do |t|
+    t.string "name"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  create_table "guests", force: :cascade do |t|
+    t.string "username"
+    t.string "name"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  create_table "moderation_logs", force: :cascade do |t|
+    t.string "reason"
+    t.string "moderatable_type", null: false
+    t.integer "moderatable_id", null: false
+    t.integer "admin_id", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["admin_id"], name: "index_moderation_logs_on_admin_id"
+    t.index ["moderatable_type", "moderatable_id"], name: "index_moderation_logs_on_moderatable"
+  end
+
+  create_table "price_reports", force: :cascade do |t|
+    t.decimal "price"
+    t.decimal "discount_price"
+    t.integer "upvotes"
+    t.integer "downvotes"
+    t.datetime "reported_at"
+    t.integer "product_id", null: false
+    t.integer "store_id", null: false
+    t.integer "guest_id", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["guest_id"], name: "index_price_reports_on_guest_id"
+    t.index ["product_id"], name: "index_price_reports_on_product_id"
+    t.index ["store_id"], name: "index_price_reports_on_store_id"
+  end
+
+  create_table "products", force: :cascade do |t|
+    t.string "name"
+    t.string "barcode"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["barcode"], name: "index_products_on_barcode", unique: true
+  end
+
+  create_table "stores", force: :cascade do |t|
+    t.string "name"
+    t.float "latitude"
+    t.float "longitude"
+    t.integer "chain_id", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["chain_id"], name: "index_stores_on_chain_id"
+  end
+
+  add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
+  add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
+  add_foreign_key "moderation_logs", "admins"
+  add_foreign_key "price_reports", "guests"
+  add_foreign_key "price_reports", "products"
+  add_foreign_key "price_reports", "stores"
+  add_foreign_key "stores", "chains"
+end

docker-compose.yml

@@ -0,0 +1,13 @@
+services:
+  db:
+    image: postgres:17
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: password
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+
+volumes:
+  postgres_data:

test/fixtures/products.yml

@@ -3,7 +3,3 @@
 one:
   name: MyString
   barcode: MyString
-
-two:
-  name: MyString
-  barcode: MyString