feat(dify-agent): add shell layer (#36838)

dify-agent/docker/shellctl/Dockerfile

@@ -0,0 +1,25 @@
+FROM python:3.13-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        ca-certificates \
+        curl \
+        tmux \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN python -m pip install --no-cache-dir \
+        shell-session-manager==2.1.1 \
+        uv
+
+RUN useradd --create-home --shell /bin/sh dify
+
+USER dify
+WORKDIR /home/dify
+
+EXPOSE 5004
+
+CMD ["shellctl", "serve", "--listen", "0.0.0.0:5004"]