diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 00000000..6b19392b
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,15 @@
+{
+  "image": "mcr.microsoft.com/devcontainers/universal:2",
+  "features": {
+  },
+  "postCreateCommand": "npm ci && npm run build && npm run lint && npm run test",
+  "customizations": {
+    "codespaces": {
+      "repositories": {
+        "diplodoc-platform/*": {
+          "permissions": "write-all"
+        }
+      }
+    }
+  }
+}
diff --git a/.gitignore b/.gitignore
index d809e2b6..19cb09d8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+/external
 /build
 /assets
 input