[electrs-blockstream] add Dockerfile, set version to 0.1.0

docker/electrs-blockstream/Dockerfile

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+# ---- builder ----
+ARG RUST_VERSION=1.90.0
+FROM rust:${RUST_VERSION}-trixie AS builder
+
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends \
+      build-essential ca-certificates clang cmake curl g++ git libclang-dev make pkg-config \
+ && apt-get install -y --no-install-recommends \
+      libbz2-dev liblz4-dev libsnappy-dev libzstd-dev zlib1g-dev \
+ && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /src
+ARG REPO=https://github.com/blockstream/electrs.git
+#ARG REF=new-index
+# pin latest commit of branch new-index
+ARG REF=f1823d82b03dbd1dfef53f7b3611128dd2f4c1d2
+
+RUN git clone --filter=blob:none "${REPO}" . \
+ && git fetch origin "${REF}" \
+ && git checkout "${REF}"
+
+# Build options: FEATURES="electrum-discovery,liquid"
+#   electrum-discovery       -> discovery support
+#   liquid                   -> Elements/Liquid support
+ARG FEATURES=electrum-discovery
+RUN cargo build --locked --release --bin electrs --features "${FEATURES}"
+
+# ---- runtime ----
+FROM debian:trixie-slim
+
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends ca-certificates libstdc++6 curl \
+ && rm -rf /var/lib/apt/lists/*
+
+RUN useradd -r -d /var/lib/electrs -s /usr/sbin/nologin electrs \
+ && mkdir -p /data && chown -R electrs:electrs /data
+
+COPY --from=builder /src/target/release/electrs /usr/local/bin/electrs
+
+USER electrs
+VOLUME ["/data"]
+
+# Electrum RPC and HTTP API
+EXPOSE 50001 3000
+
+ENTRYPOINT ["/usr/local/bin/electrs"]
+CMD ["--db-dir","/data","--electrum-rpc-addr","0.0.0.0:50001","--http-addr","0.0.0.0:3000"]

docker/electrs-blockstream/README.md

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+Electrs backend API optimized for public usage by Blockstream for the Esplora block explorer based on the re-implementation of romanz/electrs
+
+- Blockstream/electrs: https://github.com/blockstream/electrs
+- romanz/electrs https://github.com/romanz/electrs
+- Blockstream/esplora https://github.com/Blockstream/esplora
+
+
+Alternative image sources:
+- https://github.com/getumbrel/docker-electrs (using romanz/electrs)
+- https://github.com/mempool/electrs (based on romanz/electrs and Blockstream/electrs)

docker/electrs-blockstream/VERSION

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+0.1.0