Add Dev Container for local development

.devcontainer/devcontainer.json

@@ -0,0 +1,23 @@
+{
+    "name": "colcon-cache",
+    "image": "python:3",
+    "workspaceFolder": "/workspace/colcon-cache",
+    "workspaceMount": "source=${localWorkspaceFolder},target=${containerWorkspaceFolder},type=bind",
+    "onCreateCommand": ".devcontainer/on-create-command.sh",
+    "postCreateCommand": ".devcontainer/post-create-command.sh",
+    "features": {
+        "ghcr.io/devcontainers-contrib/features/apt-get-packages:1": {
+            "packages": [
+                "jq",
+            ]
+        },
+    },
+    "customizations": {
+        "vscode": {
+            "settings": {},
+            "extensions": [
+                "ms-python.python"
+            ]
+        }
+    }
+}

.devcontainer/on-create-command.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# Immediately catch all errors
+set -eo pipefail
+
+# Uncomment for debugging
+# set -x
+# env
+
+git config --global --add safe.directory "*"
+
+COLCON_CI_URL=https://github.com/colcon/ci/archive/refs/heads/main.zip
+curl -sSL $COLCON_CI_URL > /tmp/main.zip
+unzip /tmp/main.zip -d /tmp/
+GITHUB_ACTION_PATH=/tmp/ci-main
+
+PKG_NAME=$(pip list -l -e --format json | jq '.[0].name' -r | tr _ -)
+cp -a ${GITHUB_ACTION_PATH}/constraints{,-heads,-pins}.txt ./
+sed -i.orig "s/^${PKG_NAME}@.*//g" constraints-heads.txt
+# Install dependencies, including 'test' extras, as well as pytest-cov
+python -m pip install -U -e .[test] pytest-cov -c constraints.txt
+
+# cleanup temp files
+rm constraints*.txt*

.devcontainer/post-create-command.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Immediately catch all errors
+set -eo pipefail
+
+# Uncomment for debugging
+# set -x
+# env
+
+# Enable autocomplete for user
+cp /etc/skel/.bashrc ~/

.vscode/settings.json

@@ -10,5 +10,16 @@
         "sched",
         "subverb",
         "subverbs"
-    ]
-}
+    ],
+    "python.languageServer": "Default",
+    "python.testing.pytestArgs": [
+        "--cov",
+        "--cov-branch",
+        "--cov-report",
+        "xml:coverage.xml",
+        "--cov-config",
+        "setup.cfg"
+    ],
+    "python.testing.unittestEnabled": false,
+    "python.testing.pytestEnabled": true
+}