feat: restructure docker images, add sparkl2 docker image (#3794)

docker/sparkl2/Dockerfile

@@ -0,0 +1,36 @@
+ARG LNBITS_TAG=latest
+
+FROM lnbits/lnbits:${LNBITS_TAG}
+
+RUN apt-get update && apt-get -y upgrade
+RUN apt-get install -y netcat-openbsd npm nodejs git
+
+RUN curl -LsSf https://astral.sh/uv/install.sh | sh
+ENV PATH="/root/.local/bin:$PATH"
+
+# install sparksidecar
+RUN git clone https://github.com/lnbits/spark_sidecar
+RUN cd spark_sidecar && npm install
+
+# Reinstall dependencies for lnbits just in case (needed for CMD usage)
+RUN uv sync --all-extras
+
+# LNBITS
+ENV LNBITS_PORT="5000"
+ENV LNBITS_HOST="0.0.0.0"
+ENV LNBITS_BACKEND_WALLET_CLASS="SparkL2Wallet"
+ENV FUNDING_SOURCE_MAX_RETRIES=10
+
+# spark sidecar
+ENV SPARK_MNEMONIC="bottom bottom bottom bottom bottom bottom bottom bottom bottom bottom bottom bottom"
+ENV SPARK_NETWORK="MAINNET"
+ENV SPARK_SIDECAR_PORT="8765"
+ENV SPARK_PAY_WAIT_MS="20000"
+
+EXPOSE 5000
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+# Entrypoint to start sparksidebar and LNbits
+CMD ["/entrypoint.sh"]