diff --git a/docs/tutorials/release-sdks.md b/docs/tutorials/release-sdks.md
index 0e03beca71..99c0fa4fd3 100644
--- a/docs/tutorials/release-sdks.md
+++ b/docs/tutorials/release-sdks.md
@@ -26,27 +26,34 @@ Before releasing SDKs, you need to:
 
 To enable SDK releases via GitHub, you need to mount SSH keys and configure GitHub authentication in your Docker environment.
 
-#### Update docker-compose.override.yml
+#### Update Dockerfile
 
-Update `docker-compose.override.yml` to mount SSH keys and set environment variables for the `appwrite` service:
+Add the following configuration to your `Dockerfile`:
+
+```dockerfile
+ARG GH_TOKEN
+ENV GH_TOKEN=your_github_token_here
+RUN git config --global user.email "your-email@example.com"
+RUN apk add --update --no-cache openssh-client github-cli
+```
+
+Replace:
+- `your_github_token_here` with your GitHub personal access token (with appropriate permissions)
+- `your-email@example.com` with your Git email address
+
+#### Update docker-compose.yml
+
+Add the SSH key volume mount to the `appwrite` service in `docker-compose.yml`:
 
 ```yaml
 services:
   appwrite:
     volumes:
       - ~/.ssh:/root/.ssh
-    environment:
-      - GH_TOKEN=your_github_token_here
-      - GIT_EMAIL=your-email@example.com
+      # ... other volumes
 ```
 
-Uncomment the volumes section.
-
-Replace:
-- `your_github_token_here` with your GitHub personal access token (with appropriate permissions)
-- `your-email@example.com` with your Git email address
-
-This mounts your SSH keys from the host machine and sets the GitHub token and email as environment variables, allowing the container to authenticate with GitHub. The git configuration is handled automatically at runtime.
+This mounts your SSH keys from the host machine, allowing the container to authenticate with GitHub.
 
 ### Updating Specs
 
diff --git a/src/Appwrite/Platform/Modules/Databases/Http/Databases/Collections/Attributes/Datetime/Create.php b/src/Appwrite/Platform/Modules/Databases/Http/Databases/Collections/Attributes/Datetime/Create.php
index 1f2098e7af..d0f45dc664 100644
--- a/src/Appwrite/Platform/Modules/Databases/Http/Databases/Collections/Attributes/Datetime/Create.php
+++ b/src/Appwrite/Platform/Modules/Databases/Http/Databases/Collections/Attributes/Datetime/Create.php
@@ -17,6 +17,7 @@ use Utopia\Database\Validator\Key;
 use Utopia\Database\Validator\UID;
 use Utopia\Swoole\Response as SwooleResponse;
 use Utopia\Validator\Boolean;
+use Utopia\Validator\Nullable;
 
 class Create extends Action
 {
@@ -63,7 +64,7 @@ class Create extends Action
             ->param('collectionId', '', new UID(), 'Collection ID. You can create a new collection using the Database service [server integration](https://appwrite.io/docs/server/databases#createCollection).')
             ->param('key', '', new Key(), 'Attribute Key.')
             ->param('required', null, new Boolean(), 'Is attribute required?')
-            ->param('default', null, fn (Database $dbForProject) => new DatetimeValidator($dbForProject->getAdapter()->getMinDateTime(), $dbForProject->getAdapter()->getMaxDateTime()), 'Default value for the attribute in [ISO 8601](https://www.iso.org/iso-8601-date-and-time-format.html) format. Cannot be set when attribute is required.', true, ['dbForProject'])
+            ->param('default', null, fn (Database $dbForProject) => new Nullable(new DatetimeValidator($dbForProject->getAdapter()->getMinDateTime(), $dbForProject->getAdapter()->getMaxDateTime())), 'Default value for the attribute in [ISO 8601](https://www.iso.org/iso-8601-date-and-time-format.html) format. Cannot be set when attribute is required.', true, ['dbForProject'])
             ->param('array', false, new Boolean(), 'Is attribute an array?', true)
             ->inject('response')
             ->inject('dbForProject')
diff --git a/src/Appwrite/Platform/Modules/Databases/Http/TablesDB/Tables/Columns/Datetime/Create.php b/src/Appwrite/Platform/Modules/Databases/Http/TablesDB/Tables/Columns/Datetime/Create.php
index db5a3059f1..69d6bd2b4b 100644
--- a/src/Appwrite/Platform/Modules/Databases/Http/TablesDB/Tables/Columns/Datetime/Create.php
+++ b/src/Appwrite/Platform/Modules/Databases/Http/TablesDB/Tables/Columns/Datetime/Create.php
@@ -13,6 +13,7 @@ use Utopia\Database\Validator\Key;
 use Utopia\Database\Validator\UID;
 use Utopia\Swoole\Response as SwooleResponse;
 use Utopia\Validator\Boolean;
+use Utopia\Validator\Nullable;
 
 class Create extends DatetimeCreate
 {
@@ -55,7 +56,7 @@ class Create extends DatetimeCreate
             ->param('tableId', '', new UID(), 'Table ID.')
             ->param('key', '', new Key(), 'Column Key.')
             ->param('required', null, new Boolean(), 'Is column required?')
-            ->param('default', null, fn (Database $dbForProject) => new DatetimeValidator($dbForProject->getAdapter()->getMinDateTime(), $dbForProject->getAdapter()->getMaxDateTime()), 'Default value for the column in [ISO 8601](https://www.iso.org/iso-8601-date-and-time-format.html) format. Cannot be set when column is required.', true, ['dbForProject'])
+            ->param('default', null, fn (Database $dbForProject) => new Nullable(new DatetimeValidator($dbForProject->getAdapter()->getMinDateTime(), $dbForProject->getAdapter()->getMaxDateTime())), 'Default value for the column in [ISO 8601](https://www.iso.org/iso-8601-date-and-time-format.html) format. Cannot be set when column is required.', true, ['dbForProject'])
             ->param('array', false, new Boolean(), 'Is column an array?', true)
             ->inject('response')
             ->inject('dbForProject')