dockerfile: change dockerfile to resolve packages

There was some unsatisfiable packages in python3.7-alpine3.11 which cause errors
and broken build, I decide to change the container to python:3.9.16-slim-bullseye
which use more disk space but fixed the packages problem
use user nobody
support dash_hash

Dockerfile

@@ -1,6 +1,6 @@
-ARG VERSION=1.16.0
+ARG VERSION=master
 
-FROM python:3.7-alpine3.11
+FROM python:3.9.16-slim-bullseye
 LABEL maintainer="Luke Childs <lukechilds123@gmail.com>"
 
 ARG VERSION
@@ -8,15 +8,35 @@ ARG VERSION
 COPY ./bin /usr/local/bin
 
 RUN chmod a+x /usr/local/bin/* && \
-    apk add --no-cache git build-base openssl && \
-    apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/v3.11/main leveldb-dev && \
-    apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing rocksdb-dev && \
-    pip install aiohttp pylru plyvel websockets python-rocksdb uvloop && \
-    git clone -b $VERSION https://github.com/spesmilo/electrumx.git && \
-    cd electrumx && \
-    python setup.py install && \
-    apk del git build-base && \
-    rm -rf /tmp/*
+    apt-get update &&\
+    apt-get install -y --no-install-suggests --no-install-recommends\
+    gcc \
+    g++ \
+    git \
+    libbz2-dev \
+    liblz4-dev \
+    zlib1g-dev \
+    libsnappy-dev \
+    libleveldb-dev \
+    librocksdb-dev \
+    && pip install uvloop \
+    && rm -rf /var/lib/apt/lists/* \
+    && git clone https://github.com/spesmilo/electrumx.git \
+    && cd electrumx \
+    && git checkout ${VERSION} \
+    && pip install -r requirements.txt \
+    && python setup.py install \
+    && apt purge -y \
+    gcc \
+    g++ \
+    git \
+    libbz2-dev \
+    liblz4-dev \
+    zlib1g-dev \
+    libsnappy-dev \
+    libleveldb-dev \
+    librocksdb-dev \
+    && rm -rf /tmp/*
 
 VOLUME ["/data"]
 ENV HOME /data
@@ -27,6 +47,9 @@ ENV SERVICES=tcp://:50001,ssl://:50002,wss://:50004,rpc://0.0.0.0:8000
 ENV SSL_CERTFILE ${DB_DIRECTORY}/electrumx.crt
 ENV SSL_KEYFILE ${DB_DIRECTORY}/electrumx.key
 ENV HOST ""
+
+USER 65534
+
 WORKDIR /data
 
 EXPOSE 50001 50002 50004 8000