Add local/umbrel mode, rename containers to telegtrum, revert to named volumes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile.local

@@ -0,0 +1,34 @@
+FROM debian:bookworm-slim
+
+ARG VERSION=4.7.2
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        wget curl \
+        gnupg \
+        ca-certificates \
+        python3 \
+        python3-venv \
+        python3-cryptography \
+        libsecp256k1-dev \
+        build-essential \
+        pkg-config \
+        autoconf \
+        automake \
+        libtool \
+        procps \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY install.sh /usr/local/bin/install-electrum.sh
+RUN chmod +x /usr/local/bin/install-electrum.sh \
+    && /usr/local/bin/install-electrum.sh "${VERSION}"
+
+COPY requirements.txt /app/requirements.txt
+RUN /opt/electrum/bin/pip install --quiet -r /app/requirements.txt
+
+COPY bot.py /app/bot.py
+COPY entrypoint.local.sh /app/entrypoint.sh
+RUN chmod +x /app/entrypoint.sh
+
+WORKDIR /root
+
+ENTRYPOINT ["/app/entrypoint.sh"]