Initial Docker support

Dockerfile

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+FROM debian:bookworm-slim AS base
+
+RUN apt update -qy
+RUN apt install -qy librocksdb-dev
+
+FROM base as build
+
+RUN apt install -qy git cargo clang cmake
+
+WORKDIR /build
+COPY . .
+
+RUN cargo build --release --bin electrs
+
+FROM base as deploy
+
+COPY --from=build /build/target/release/electrs /bin/electrs
+
+EXPOSE 50001
+
+ENTRYPOINT ["/bin/electrs"]

docker-compose.yml

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+version: '3.9'
+services:
+
+  mempool-electrs:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    restart: on-failure
+
+    ports:
+      - 50001:50001
+
+    entrypoint:
+      /bin/electrs
+    command: |
+      --address-search
+      --cookie mempool:mempool
+      --db-dir /electrs
+      --cors '*'
+    volumes:
+    - 'electrs_data:/electrs'
+
+volumes:
+  electrs_data: