Allow running Skyvern on newer DB version when explicitly requested (#3955)

entrypoint-skyvern.sh

@@ -2,9 +2,33 @@
 
 set -e
 
-# check alembic
-alembic upgrade head
-alembic check
+# Set ALLOWED_SKIP_DB_MIGRATION_VERSION env var to the DB version you want to allow (select * from alembic_version)
+# If current DB matches this version, migrations will be skipped. Use at your own risk.
+ALLOWED_SKIP_DB_MIGRATION_VERSION=${ALLOWED_SKIP_DB_MIGRATION_VERSION:-}
+
+# Run migrations by default
+run_migration=true
+
+if [ -n "$ALLOWED_SKIP_DB_MIGRATION_VERSION" ]; then
+    current_version=$(alembic current 2>&1 | grep -Eo "[0-9a-f]{12,}" | tail -n 1 || echo "")
+    echo "Current DB version: $current_version"
+
+    if [ "$current_version" = "$ALLOWED_SKIP_DB_MIGRATION_VERSION" ]; then
+        echo "⚠️  WARNING: Skipping database migrations"
+        echo "⚠️  DB is at version $current_version which matches ALLOWED_SKIP_DB_MIGRATION_VERSION"
+        echo "⚠️  Running older code against newer database schema"
+        echo "⚠️  Beware of compatibility risks!"
+        run_migration=false
+    else
+        echo "Current DB version ($current_version) does not match ALLOWED_SKIP_DB_MIGRATION_VERSION ($ALLOWED_SKIP_DB_MIGRATION_VERSION)"
+    fi
+fi
+
+if [ "$run_migration" = true ]; then
+    echo "Running database migrations..."
+    alembic upgrade head
+    alembic check
+fi
 
 if [ ! -f ".streamlit/secrets.toml" ]; then
     echo "Creating organization and API token..."