[Python] Docker "ERROR: could not find an available, non-overlapping IPv4 address pool among...

I have a directory apkmirror-scraper-compose with the following structure:

.
├── docker-compose.yml
├── privoxy
│ ├── config
│ └── Dockerfile
├── scraper
│ ├── Dockerfile
│ ├── newnym.py
│ └── requirements.txt
└── tor
└── Dockerfile


I'm trying to run the following docker-compose.yml:

version: '3'

services:
privoxy:
build: ./privoxy
ports:
- "8118:8118"
links:
- tor

tor:
build:
context: ./tor
args:
password: ""
ports:
- "9050:9050"
- "9051:9051"

scraper:
build: ./scraper
links:
- tor
- privoxy


where the Dockerfile for tor is

FROM alpine:latest
EXPOSE 9050 9051
ARG password
RUN apk --update add tor
RUN echo "ControlPort 9051" >> /etc/tor/torrc
RUN echo "HashedControlPassword $(tor --quiet --hash-password $password)" >> /etc/tor/torrc
CMD ["tor"]


that for privoxy is

FROM alpine:latest
EXPOSE 8118
RUN apk --update add privoxy
COPY config /etc/privoxy/config
CMD ["privoxy", "--no-daemon"]


where config consists of the two lines

listen-address 0.0.0.0:8118
forward-socks5 / tor:9050 .


and the Dockerfile for scraper is

FROM python:2.7-alpine
ADD . /scraper
WORKDIR /scraper
RUN pip install -r requirements.txt
CMD ["python", "newnym.py"]


where requirements.txt contains the single line requests. Finally, the program newnym.py is designed to simply test whether changing the IP address using Tor is working:

from time import sleep, time

import requests as req
import telnetlib


def get_ip():
IPECHO_ENDPOINT = 'http://ipecho.net/plain'
HTTP_PROXY = 'http://privoxy:8118'
return req.get(IPECHO_ENDPOINT, proxies={'http': HTTP_PROXY}).text


def request_ip_change():
tn = telnetlib.Telnet('tor', 9051)
tn.read_until("Escape character is '^]'.", 2)
tn.write('AUTHENTICATE ""\r\n')
tn.read_until("250 OK", 2)
tn.write("signal NEWNYM\r\n")
tn.read_until("250 OK", 2)
tn.write("quit\r\n")
tn.close()


if __name__ == '__main__':
dts = []
try:
while True:
ip = get_ip()
t0 = time()
request_ip_change()
while True:
new_ip = get_ip()
if new_ip == ip:
sleep(1)
else:
break
dt = time() - t0
dts.append(dt)
print("{} -> {} in ~{}s".format(ip, new_ip, int(dt)))
except KeyboardInterrupt:
print("Stopping...")
print("Average: {}".format(sum(dts) / len(dts)))


The docker-compose build builds successfully, but if I try docker-compose up, I get the following error message:

Creating network "apkmirrorscrapercompose_default" with the default driver
ERROR: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network


I tried searching for help on this error message, but couldn't find any. What is causing this error?

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