diff --git a/.gitea/workflows/docker-build.yaml b/.gitea/workflows/docker-build.yaml
old mode 100644
new mode 100755
diff --git a/backend/src/main/java/com/magistr/app/config/tenant/TenantConfig.java b/backend/src/main/java/com/magistr/app/config/tenant/TenantConfig.java
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diff --git a/backend/src/main/java/com/magistr/app/config/tenant/TenantContext.java b/backend/src/main/java/com/magistr/app/config/tenant/TenantContext.java
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diff --git a/backend/src/main/java/com/magistr/app/config/tenant/TenantDataSourceConfig.java b/backend/src/main/java/com/magistr/app/config/tenant/TenantDataSourceConfig.java
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new mode 100755
diff --git a/backend/src/main/java/com/magistr/app/config/tenant/TenantInterceptor.java b/backend/src/main/java/com/magistr/app/config/tenant/TenantInterceptor.java
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diff --git a/backend/src/main/java/com/magistr/app/config/tenant/TenantRoutingDataSource.java b/backend/src/main/java/com/magistr/app/config/tenant/TenantRoutingDataSource.java
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diff --git a/backend/src/main/java/com/magistr/app/controller/DatabaseController.java b/backend/src/main/java/com/magistr/app/controller/DatabaseController.java
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diff --git a/backend/src/main/java/com/magistr/app/utils/TypeAndFormatLessonValidator.java b/backend/src/main/java/com/magistr/app/utils/TypeAndFormatLessonValidator.java
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diff --git a/backend/tenants.json b/backend/tenants.json
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new mode 100755
index 4641650..704573b
--- a/backend/tenants.json
+++ b/backend/tenants.json
@@ -2,7 +2,7 @@
   {
     "name": "Default (dev)",
     "domain": "default",
-    "url": "jdbc:postgresql://192.168.1.87:5432/app_db",
+    "url": "jdbc:postgresql://db:5432/app_db",
     "username": "myuser",
     "password": "supersecretpassword"
   }
diff --git a/frontend/admin/js/views/database.js b/frontend/admin/js/views/database.js
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diff --git a/frontend/admin/views/database.html b/frontend/admin/views/database.html
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