docker-compose with mempool and electrum server

docker-compose.yml

version: '3.8'
services:
  postgres:
    image: postgres:latest
    restart: always
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
      - POSTGRES_DB=postgres
    ports:
      - '5432:5432'
    volumes:
      - ./docker-data/postgres:/var/lib/postgresql/data

  mempool-electrs:
    image: mempool/electrs:latest
    restart: always
    entrypoint: /bin/electrs
    command: |
      --address-search
      --db-dir /data
      --cors '*'
      --network regtest
      --electrum-rpc-addr '0.0.0.0:50001'
      --http-addr '0.0.0.0:3000'
      --cookie polaruser:polarpass
      --daemon-rpc-addr 'host.docker.internal:18443'
      --lightmode
      --timestamp
      -v
    volumes:
      # I could not figure out a better way to get the bitcoind data directory
      # from polar into the electrs container. This is a workaround. :)
      - ~/.polar/networks/1/volumes/bitcoind/backend1:/root/.bitcoin:ro
      - ./docker-data/electrs:/data
    ports:
      - '50001:50001'
      - '50002:3000'

  mempool-api:
    image: mempool/backend:latest
    restart: on-failure
    user: '1000:1000'
    stop_grace_period: 1m
    depends_on:
      - mempool-db
      - mempool-electrs
    command:
      './wait-for-it.sh mempool-db:3306 --timeout=720 --strict -- ./start.sh'
    environment:
      MEMPOOL_BACKEND: 'electrum'
      ELECTRUM_HOST: 'host.docker.internal'
      ELECTRUM_PORT: '50001'
      ELECTRUM_TLS_ENABLED: 'false'
      CORE_RPC_HOST: 'host.docker.internal'
      CORE_RPC_PORT: '18443'
      CORE_RPC_USERNAME: 'polaruser'
      CORE_RPC_PASSWORD: 'polarpass'
      DATABASE_ENABLED: 'true'
      DATABASE_HOST: 'mempool-db'
      DATABASE_DATABASE: 'mempool'
      DATABASE_USERNAME: 'mempool'
      DATABASE_PASSWORD: 'mempool'
      STATISTICS_ENABLED: 'true'
    ports:
      - '8999:8999'
    volumes:
      - ./docker-data/mempool:/backend/cache

  mempool-db:
    image: mariadb:10.5.21
    user: '1000:1000'
    restart: on-failure
    stop_grace_period: 1m
    environment:
      MYSQL_DATABASE: 'mempool'
      MYSQL_USER: 'mempool'
      MYSQL_PASSWORD: 'mempool'
      MYSQL_ROOT_PASSWORD: 'admin'
    volumes:
      - ./docker-data/mysql:/var/lib/mysql

  # bitcoin-core:
  #   image: polarlightning/bitcoind:26.0
  #   hostname: bitcoin-core
  #   stop_grace_period: 5m
  #   restart: always
  #   environment:
  #     USERID: ${USERID:-1000}
  #     GROUPID: ${GROUPID:-1000}
  #   command:
  #     [
  #       '-server=1',
  #       '-regtest=1',
  #       '-rpcauth=polaruser:5e5e98c21f5c814568f8b55d83b23c1c$066b03f92df30b11de8e4b1b1cd5b1b4281aa25205bd57df9be82caf97a05526',
  #       '-debug=1',
  #       '-zmqpubrawblock=tcp://0.0.0.0:28334',
  #       '-zmqpubrawtx=tcp://0.0.0.0:28335',
  #       '-zmqpubhashblock=tcp://0.0.0.0:28336',
  #       '-txindex=1',
  #       '-dnsseed=0',
  #       '-upnp=0',
  #       '-rpcbind=0.0.0.0',
  #       '-rpcallowip=0.0.0.0/0',
  #       '-rpcport=18443',
  #       '-rest',
  #       '-listen=1',
  #       '-listenonion=0',
  #       '-fallbackfee=0.0002',
  #       '-blockfilterindex=1',
  #       '-peerblockfilters=1',
  #     ]
  #   expose:
  #     - '18443'
  #     - '18444'
  #     - '28334'
  #     - '28335'
  #   ports:
  #     - '18443:18443'
  #     - '19444:18444'
  #     - '28334:28334'
  #     - '29335:28335'
  #   volumes:
  #     - ./docker-data/bitcoin-core:/home/bitcoin/.bitcoin

  # # Merchant's Lightning Node that will only have a channel with musqet-node
  # merchant-node:
  #   image: polarlightning/lnd:0.17.4-beta
  #   hostname: merchant-node
  #   stop_grace_period: 2m
  #   environment:
  #     USERID: ${USERID:-1000}
  #     GROUPID: ${GROUPID:-1000}
  #   command:
  #     [
  #       'lnd',
  #       '--noseedbackup',
  #       '--trickledelay=5000',
  #       '--alias=merchant-node',
  #       '--externalip=merchant-node',
  #       '--tlsextradomain=merchant-node',
  #       '--tlsextradomain=merchant-node',
  #       '--tlsextradomain=host.docker.internal',
  #       '--listen=0.0.0.0:9735',
  #       '--rpclisten=0.0.0.0:10009',
  #       '--restlisten=0.0.0.0:8080',
  #       '--bitcoin.active',
  #       '--bitcoin.regtest',
  #       '--bitcoin.node=bitcoind',
  #       '--bitcoind.rpchost=bitcoin-core',
  #       '--bitcoind.rpcuser=polaruser',
  #       '--bitcoind.rpcpass=polarpass',
  #       '--bitcoind.zmqpubrawblock=tcp://bitcoin-core:28334',
  #       '--bitcoind.zmqpubrawtx=tcp://bitcoin-core:28335',
  #     ]
  #   restart: always
  #   volumes:
  #     - ./docker-data/merchant-node:/home/lnd/.lnd
  #   expose:
  #     - '8080'
  #     - '10009'
  #     - '9735'
  #   ports:
  #     - '8081:8080'
  #     - '10001:10009'
  #     - '9735:9735'

  # # Musqet's Lightning Node
  # musqet-node:
  #   image: polarlightning/lnd:0.17.4-beta
  #   hostname: musqet-node
  #   stop_grace_period: 2m
  #   environment:
  #     USERID: ${USERID:-1000}
  #     GROUPID: ${GROUPID:-1000}
  #   command:
  #     [
  #       'lnd',
  #       '--noseedbackup',
  #       '--trickledelay=5000',
  #       '--alias=musqet-node',
  #       '--externalip=musqet-node',
  #       '--tlsextradomain=musqet-node',
  #       '--tlsextradomain=musqet-node',
  #       '--tlsextradomain=host.docker.internal',
  #       '--listen=0.0.0.0:9735',
  #       '--rpclisten=0.0.0.0:10009',
  #       '--restlisten=0.0.0.0:8080',
  #       '--bitcoin.active',
  #       '--bitcoin.regtest',
  #       '--bitcoin.node=bitcoind',
  #       '--bitcoind.rpchost=bitcoin-core',
  #       '--bitcoind.rpcuser=polaruser',
  #       '--bitcoind.rpcpass=polarpass',
  #       '--bitcoind.zmqpubrawblock=tcp://bitcoin-core:28334',
  #       '--bitcoind.zmqpubrawtx=tcp://bitcoin-core:28335',
  #     ]
  #   restart: always
  #   volumes:
  #     - ./docker-data/musqet-node:/home/lnd/.lnd
  #   expose:
  #     - '8080'
  #     - '10009'
  #     - '9735'
  #   ports:
  #     - '8082:8080'
  #     - '10002:10009'
  #     - '9736:9735'

  # public-node:
  #   image: polarlightning/lnd:0.17.4-beta
  #   hostname: public-node
  #   stop_grace_period: 2m
  #   environment:
  #     USERID: ${USERID:-1000}
  #     GROUPID: ${GROUPID:-1000}
  #   command:
  #     [
  #       'lnd',
  #       '--noseedbackup',
  #       '--trickledelay=5000',
  #       '--alias=public-node',
  #       '--externalip=public-node',
  #       '--tlsextradomain=public-node',
  #       '--tlsextradomain=public-node',
  #       '--tlsextradomain=host.docker.internal',
  #       '--listen=0.0.0.0:9735',
  #       '--rpclisten=0.0.0.0:10009',
  #       '--restlisten=0.0.0.0:8080',
  #       '--bitcoin.active',
  #       '--bitcoin.regtest',
  #       '--bitcoin.node=bitcoind',
  #       '--bitcoind.rpchost=bitcoin-core',
  #       '--bitcoind.rpcuser=polaruser',
  #       '--bitcoind.rpcpass=polarpass',
  #       '--bitcoind.zmqpubrawblock=tcp://bitcoin-core:28334',
  #       '--bitcoind.zmqpubrawtx=tcp://bitcoin-core:28335',
  #     ]
  #   restart: always
  #   volumes:
  #     - ./docker-data/public-node:/home/lnd/.lnd
  #   expose:
  #     - '8080'
  #     - '10009'
  #     - '9735'
  #   ports:
  #     - '8083:8080'
  #     - '10003:10009'
  #     - '9737:9735'