Add devcontainer

.devcontainer/Dockerfile

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+FROM mcr.microsoft.com/devcontainers/python:1-3.11-bullseye
+
+ENV PYTHONUNBUFFERED 1
+
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    && apt-get -y install --no-install-recommends postgresql-client \
+     && apt-get clean -y && rm -rf /var/lib/apt/lists/*
+
+# [Optional] If your requirements rarely change, uncomment this section to add them to the image.
+# COPY requirements.txt /tmp/pip-tmp/
+# RUN pip3 --disable-pip-version-check --no-cache-dir install -r /tmp/pip-tmp/requirements.txt \
+#    && rm -rf /tmp/pip-tmp
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+
+

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/postgres
+{
+	"name": "Python 3 & PostgreSQL",
+	"dockerComposeFile": "docker-compose.yml",
+	"service": "app",
+	"workspaceFolder": "/workspaces/${localWorkspaceFolderBasename}",
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// This can be used to network with other containers or the host.
+	"forwardPorts": [5000, 5432],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "pip install --user -r requirements.txt",
+
+	// Configure tool-specific properties.
+	"customizations": {
+		// Configure properties specific to VS Code.
+		"vscode": {
+			// Add the IDs of extensions you want installed when the container is created.
+			"extensions": [
+				"ms-python.python",
+				"ms-python.vscode-pylance",
+				"charliermarsh.ruff",
+				"ms-python.black-formatter",
+				"mtxr.sqltools",
+				"mtxr.sqltools-driver-pg",
+				"ms-vscode.vscode-node-azure-pack"
+			],
+			// Set *default* container specific settings.json values on container create.
+			"settings": {
+				"python.defaultInterpreterPath": "/usr/local/bin/python",
+				"python.linting.enabled": true,
+				"python.testing.unittestEnabled": false,
+				"python.testing.pytestEnabled": false,
+				"[python]": {
+					"editor.formatOnSave": true,
+					"editor.codeActionsOnSave": {
+						"source.fixAll": true
+					}
+				},
+				"python.formatting.provider": "black",
+				"sqltools.connections": [
+					{
+						"name": "Local database",
+						"driver": "PostgreSQL",
+						"server": "localhost",
+						"port": 5432,
+						"database": "postgres",
+						"username": "admin",
+						"password": "LocalPasswordOnly"
+					},
+					{
+						"name": "Azure database",
+						"driver": "PostgreSQL",
+						"server": "<HOSTNAME>.postgres.database.azure.com",
+						"port": 5432,
+						"database": "postgres",
+						"username": "<USERNAME>",
+						"askForPassword": true,
+						"pgOptions": {
+							"ssl": true
+						}
+					}
+				],
+				"files.exclude": {
+					".ruff_cache": true,
+					".pytest_cache": true
+				}
+			}
+		}
+	},
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "pip install -r requirements.txt",
+	// Comment out to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+	"remoteUser": "vscode"
+}

.devcontainer/docker-compose.yml

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+version: '3.8'
+
+services:
+  app:
+    build:
+      context: ..
+      dockerfile: .devcontainer/Dockerfile
+
+    volumes:
+      - ../..:/workspaces:cached
+
+    # Overrides default command so things don't shut down after the process ends.
+    command: sleep infinity
+
+    # Runs app on the same network as the database container, allows "forwardPorts" in devcontainer.json function.
+    network_mode: service:db
+
+    # Use "forwardPorts" in **devcontainer.json** to forward an app port locally.
+    # (Adding the "ports" property to this file will not forward from a Codespace.)
+
+  db:
+    image: postgres:latest
+    restart: unless-stopped
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+    environment:
+      POSTGRES_USER: admin
+      POSTGRES_DB: postgres
+      POSTGRES_PASSWORD: LocalPasswordOnly
+
+    # Add "forwardPorts": ["5432"] to **devcontainer.json** to forward PostgreSQL locally.
+    # (Adding the "ports" property to this file will not forward from a Codespace.)
+
+volumes:
+  postgres-data: