start a cloudflare quick tunnel (no cloudflare account needed, no cloudflared needs to be installed) to expose your local wp-env development instance to the internet using https

wp-env-cloudlfare.sh

#!/usr/bin/env bash

# starts a cloudflare quick tunnel (no cloudflare account needed, no cloudflared needs to be installed)
# for tunneling a wp-env wordpress site to the internet.
#
# dependencies : bash, docker, jq
#
# the wp-env instance does needed to be started since this script hijacks
# the wp-env instance file "wp-env-home/*/WordPress/wp-config.php"
# the wp-env instance is restarted the quick tunnel will be available
#
# your wp-env wordpress development instance is
# afterwards available using true HTTPS in the public internet
#
# abort the script using ctrl-c/ctrl-d/etc will take your wp-env instance offline and
# cleans up the docker ćontainer
#
# ATTENTION:
# cloudflare has a undocumented rate limit for quick tunnels. so be careful with the script
# if you run the script too often in a short time, the quick tunnel will not be created
#
# a quick tunnel can be used across wp-env restarts so you dont need to run the script again and again
#
# if an quick tunnel could not be openend up an error message will appear
# "failed to unmarshal quick Tunnel: invalid character 'e' looking for beginning of value"
# you should wait for an hour and try aghain - its a rate limit from cloudflare for quick tunnels
#
# autor: lars gersmann <[email protected]>

# set the port of the wp-env instance to tunnel (defaults to 8888)
WP_ENV_PORT=${WP_ENV_PORT:-8888}
# docker container name to identify the created cloudflare container
CLOUDFLARE_DOCKER_CONTAINER_NAME="cloudflare-tunnel"
# limit of quicktunnel checks before aborting
QUICKTUNNEL_CHECK_LIMIT=10
# cloudflared metrics port
CLOUDFLARED_METRICS_PORT=55555

if [ -f wp-env-home/*/WordPress/wp-config.php ]; then
  echo "wp-env instance is running"
else
  echo "wp-env instance is not running"
  exit 1
fi

# this is just for safety reasons :
# silently cleanup any existing containers with the same name
# (may happen if something went wrong)
containers=$(docker ps -a -q --filter="name=$CLOUDFLARE_DOCKER_CONTAINER_NAME")
[ -n "$containers" ] && docker rm -f $containers

# run the cloudflared container
#   --network=host is used to allow the container to access the host's network
#   --rm is used to remove the container when it exits
#   --name is used to give the container a name
#   --no-autoupdate is used to disable auto-updates
#   --metrics is used to expose metrics on localhost:55555
#   --url is used to specify the local server to tunnel to
#   & is used to run the command in the background
docker run --pull=always --network=host --rm --name $CLOUDFLARE_DOCKER_CONTAINER_NAME cloudflare/cloudflared:latest \
  tunnel --no-autoupdate  --metrics localhost:$CLOUDFLARED_METRICS_PORT --url http://localhost:$WP_ENV_PORT &

# count of already done quicktunnel checks
quicktunnel_checks=1

# wait for the cloudflared container to be ready
while true; do
  # wait 2 seonds before testing cloudflare quicktunnel is available
  sleep 2

  # send a ready request to the cloudflared container
  # (see all quicktunnel / metrics commands here : https://github.com/cloudflare/cloudflared/issues/900#issuecomment-1464758364)
  response=$(curl -s http://localhost:${CLOUDFLARED_METRICS_PORT}/ready ||:)

  echo "(${quicktunnel_checks}/10) waiting for cloudflared container to be ready ..."
  # check if the HTTP status is 200 and the JSON response has a status property of 200
  if [[ $(echo $response | jq -r '.status') == "200" ]]; then
      echo "cloudflared container is ready"
      break
  fi

  ((quicktunnel_checks++))
  # if the counter is > QUICKTUNNEL_CHECK_LIMIT, abort the script
  if [ $quicktunnel_checks -gt $QUICKTUNNEL_CHECK_LIMIT ]; then
      echo "abort : cloudflared container was not ready after 10 attempts"
      exit 1
  fi
done

cloudflare_url="https://$(curl -s http://localhost:${CLOUDFLARED_METRICS_PORT}/quicktunnel | jq -r .hostname)"
echo "

website is available at: ${cloudflare_url}

Don't forget to shutdown this script using ctrl-c/ctrl-d/etc at the end of the day
to avoid that your wordpress instance is available in the internet 24/7 !
"

# TODO: inject the cloudflare url into the wp-env instance WP_SITEURL and WP_HOME constants
sed -i "/define( 'WP_SITEURL',/s|'[^']*' );$|'$cloudflare_url' );|g" wp-env-home/*/WordPress/wp-config.php
sed -i "/define( 'WP_HOME',/s|'[^']*' );$|'$cloudflare_url' );|g" wp-env-home/*/WordPress/wp-config.php

# not needed
# if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && strpos($_SERVER['HTTP_X_FORWARDED_PROTO'], 'https') !== false) {
# 	$_SERVER['HTTPS'] = 'on';
# }

# wait until cloudflared container or scripts exists (e.g. ctrl-c)
wait

# cleanup/kill the container when the script exits
trap "docker rm -f $(docker ps -a -q --filter="name=$CLOUDFLARE_DOCKER_CONTAINER_NAME") 2 > /dev/null" EXIT SIGINT SIGTERM