Add devcontainer config

.devcontainer/Dockerfile

@@ -0,0 +1,22 @@
+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"