Add devcontainer config

.devcontainer/Dockerfile

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+FROM geerlingguy/docker-debian12-ansible:latest
+
+ENV LANG=C.UTF-8
+ENV LC_ALL=C.UTF-8
+
+RUN apt-get update && \
+	apt-get install -y --no-install-recommends \
+		python3-passlib \
+		git \
+		pwgen \
+		openssh-client \
+		curl && \
+	rm -rf /var/lib/apt/lists/* && \
+	rm -Rf /usr/share/doc && rm -Rf /usr/share/man && \
+	apt-get clean
+
+# Install Just
+RUN curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to /usr/local/bin
+
+# Preserve command history across container restarts
+RUN SNIPPET="export PROMPT_COMMAND='history -a' && export HISTFILE=/commandhistory/.bash_history" \
+    && echo "$SNIPPET" >> "/root/.bashrc"

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json.
+{
+	"name": "matrix-docker-ansible-deploy",
+	"build": {
+		"dockerfile": "Dockerfile",
+		"context": ".."
+	},
+	"postCreateCommand": {
+		"Fix Volume Permissions": "sudo chown -R $(whoami): /commandhistory"
+	},
+	"postAttachCommand": "bash",
+	"mounts": [
+		{
+			"source": "${localEnv:SSH_AUTH_SOCK}",
+			"target": "/agent.sock",
+			"type": "bind"
+		},
+		{
+			"source": "matrix-docker-ansible-deploy-bashhistory",
+			"target": "/commandhistory",
+			"type": "volume"
+		}
+	],
+	"containerEnv": {
+		"SSH_AUTH_SOCK": "/agent.sock"
+	},
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"EditorConfig.EditorConfig",
+				"redhat.ansible",
+				"redhat.vscode-yaml",
+				"ms-python.python"
+			]
+		}
+	}
+}