fix: properly parse mysql connection string, docs update

.gitignore

@@ -1,5 +1,8 @@
-# Exclude config file
+# Exclude IDE
 .vscode/
+.idea/
+
+# Exclude config file
 *.toml
 
 # Exclude executable file

docker-compose.yaml

@@ -16,18 +16,9 @@ services:
       - "postgres"
       - "mariadb"
     environment:
-      SHIORI_DBMS: mysql
       SHIORI_DIR: /srv/shiori
-      SHIORI_PG_USER: shiori
-      SHIORI_PG_PASS: shiori
-      SHIORI_PG_NAME: shiori
-      SHIORI_PG_HOST: postgres
-      SHIORI_PG_PORT: 5432
-      SHIORI_PG_SSLMODE: disable
-      SHIORI_MYSQL_USER: shiori
-      SHIORI_MYSQL_PASS: shiori
-      SHIORI_MYSQL_NAME: shiori
-      SHIORI_MYSQL_ADDRESS: (mariadb)
+      #SHIORI_DATABASE_URL: mysql://shiori:shiori@(mariadb)/shiori?charset=utf8mb4
+      SHIORI_DATABASE_URL: postgres://shiori:shiori@postgres/shiori?sslmode=disable
 
   postgres:
     image: postgres:15

docs/Configuration.md

@@ -35,22 +35,12 @@ Shiori uses an SQLite3 database stored in the above data directory by default. I
 
 ### MySQL
 
-| Variable               | Description                                         |
-|------------------------|-----------------------------------------------------|
-| `SHIORI_DBMS`          | Must be set to `mysql`                              |
-| `SHIORI_MYSQL_USER`    | Name of MySQL user                                  |
-| `SHIORI_MYSQL_PASS`    | Password for the above user                         |
-| `SHIORI_MYSQL_NAME`    | Name of database to use                             |
-| `SHIORI_MYSQL_ADDRESS` | Address of MySQL server, e.g. `tcp(127.0.0.1:3306)` or `unix(/tmp/mysqld.sock)` |
+MySQL example: `SHIORI_DATABASE_URL="mysql://username:password@(hostname:port)/database?charset=utf8mb4"`
+
+You can find additional details in [go mysql sql driver documentation](https://github.com/go-sql-driver/mysql#dsn-data-source-name).
 
 ### PostgreSQL
 
-| Variable            | Description                                         |
-|---------------------|-----------------------------------------------------|
-| `SHIORI_DBMS`       | Must be set to `postgresql`                         |
-| `SHIORI_PG_USER`    | Name of PostgreSQL user                             |
-| `SHIORI_PG_PASS`    | Password for the above user                         |
-| `SHIORI_PG_NAME`    | Name of database to use                             |
-| `SHIORI_PG_HOST`    | Address of PostgreSQL server                        |
-| `SHIORI_PG_PORT`    | Port number used by PostgreSQL server               |
-| `SHIORI_PG_SSLMODE` | PostgreSQL connection SSL mode (default: `disable`) |
+PostgreSQL example: `SHIORI_DATABASE_URL="postgres://pqgotest:password@hostname/database?sslmode=verify-full"`
+
+You can find additional details in [go postgres sql driver documentation](https://pkg.go.dev/github.com/lib/pq).

internal/database/database.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"log"
 	"net/url"
+	"strings"
 
 	"github.com/go-shiori/shiori/internal/model"
 	"github.com/jmoiron/sqlx"
@@ -54,7 +55,8 @@ func Connect(ctx context.Context, dbURL string) (DB, error) {
 
 	switch dbU.Scheme {
 	case "mysql":
-		return OpenMySQLDatabase(ctx, dbURL)
+		urlNoSchema := strings.Split(dbURL, "://")[1]
+		return OpenMySQLDatabase(ctx, urlNoSchema)
 	case "postgres":
 		return OpenPGDatabase(ctx, dbURL)
 	case "sqlite":