Merge branch 'fix-dockerfile'

Dockerfile

@@ -1,27 +1,32 @@
 FROM rust:1.44.1-slim-buster as builder
 
+WORKDIR /build
+
 RUN apt-get update \
     && apt-get install -y --no-install-recommends clang=1:7.* cmake=3.* \
-  libsnappy-dev=1.* curl \
+    libsnappy-dev=1.* \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
-RUN adduser --disabled-login --system --shell /bin/false --uid 1000 user
-
-WORKDIR /home/user
 COPY . .
-RUN chown -R user .
 
 RUN cargo install --locked --path .
 
 # Create runtime image
 FROM debian:buster-slim
 
-RUN adduser --disabled-login --system --shell /bin/false --uid 1000 user
+WORKDIR /app
 
-WORKDIR /home/user/app
-RUN chown user .
-COPY --from=builder /home/user/target/release .
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends curl \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /build/target/release .
+
+RUN groupadd -r user \
+    && adduser --disabled-login --system --shell /bin/false --uid 1000 --ingroup user user \
+    && chown -R user:user /app
 
 USER user
 
@@ -35,4 +40,4 @@ STOPSIGNAL SIGINT
 
 HEALTHCHECK CMD curl -fSs http://localhost:4224/ || exit 1
 
-ENTRYPOINT ["./electrs", "-vvvv", "--timestamp"]
+ENTRYPOINT ["./electrs"]

doc/usage.md

@@ -131,16 +131,35 @@ If you installed `cfg_me` to generate man page, you can run `cfg_me man` to see
 
 Note: currently Docker installation links statically
 
+Note: health check only works if Prometheus is running on port 4224 inside container
+
 ```bash
 $ docker build -t electrs-app .
 $ mkdir db
 $ docker run --network host \
              --volume $HOME/.bitcoin:/home/user/.bitcoin:ro \
              --volume $PWD/db:/home/user/db \
+             --env ELECTRS_VERBOSE=4 \
+             --env ELECTRS_TIMESTAMP=true \
              --env ELECTRS_DB_DIR=/home/user/db \
              --rm -i -t electrs-app
 ```
 
+If not using the host-network, you probably want to expose the ports for electrs and Prometheus like so:
+
+```bash
+$ docker run --volume $HOME/.bitcoin:/home/user/.bitcoin:ro \
+             --volume $PWD/db:/home/user/db \
+             --env ELECTRS_VERBOSE=4 \
+             --env ELECTRS_TIMESTAMP=true \
+             --env ELECTRS_DB_DIR=/home/user/db \
+             --env ELECTRS_ELECTRUM_RPC_ADDR=0.0.0.0:50001 \
+             --env ELECTRS_MONITORING_ADDR=0.0.0.0:4224 \
+             --rm -i -t electrs-app
+```
+
+To access the server from outside Docker, add `-p 50001:50001 -p 4224:4224` but be aware of the security risks. Good practice is to group containers that needs access to the server inside the same Docker network and not expose the ports to the outside world.
+
 ## Native OS packages
 
 There are currently no official/stable binary packages.