diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
new file mode 100644
index 0000000..bd337f7
--- /dev/null
+++ b/.devcontainer/Dockerfile
@@ -0,0 +1,8 @@
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.191.1/containers/python-3/.devcontainer/base.Dockerfile
+
+# [Choice] Python version: 3, 3.9, 3.8, 3.7, 3.6
+ARG VARIANT="3.9"
+FROM mcr.microsoft.com/vscode/devcontainers/python:0-${VARIANT}
+
+# vsketch as of Aug 25, 2021
+RUN pip3 --disable-pip-version-check --no-cache-dir install https://github.com/abey79/vsketch/archive/6d4b4ea1de27ba563032ce1aee02457c16d4ea60.zip
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000..f6df7b2
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,21 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.191.1/containers/python-3
+{
+  "name": "Prettymaps",
+  "postStartCommand": "script/bootstrap",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": "..",
+    "args": {
+      "VARIANT": "3.9"
+    }
+  },
+
+  "settings": {
+    "python.pythonPath": "/usr/local/bin/python",
+  },
+
+  "extensions": ["ms-python.python", "ms-python.vscode-pylance"],
+
+  "remoteUser": "vscode"
+}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..287291a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*.py[cod]
+*.egg-info
+cache
diff --git a/prettymaps/draw.py b/prettymaps/draw.py
index 456644d..a1ba4a5 100644
--- a/prettymaps/draw.py
+++ b/prettymaps/draw.py
@@ -106,9 +106,9 @@ def plot_shapes(shapes, ax, vsketch = None, palette = None, **kwargs):
 
 # Parse query (by coordinates, OSMId or name)
 def parse_query(query):
-    if type(query) in([Polygon, MultiPolygon]):
+    if isinstance(query, (Polygon, MultiPolygon)):
         return 'polygon'
-    elif type(query) == tuple:
+    elif isinstance(query, tuple):
         return 'coordinates'
     elif re.match('''[A-Z][0-9]+''', query):
         return 'osmid'
@@ -222,7 +222,7 @@ def plot(
             ax.add_patch(PolygonPatch(geom, **drawing_kwargs['background']))
         else:
             vsketch.geometry(geom)
-    
+
     # Adjust bounds
     xmin, ymin, xmax, ymax = layers['perimeter'].buffer(max_dilation).bounds
     if vsketch is None:
diff --git a/script/bootstrap b/script/bootstrap
new file mode 100755
index 0000000..1eda704
--- /dev/null
+++ b/script/bootstrap
@@ -0,0 +1,9 @@
+#!/bin/sh
+# Resolve all dependencies that the application requires to run.
+
+# Stop on errors
+set -e
+
+cd "$(dirname "$0")/.."
+
+pip3 install -e .