mempool/docker/frontend/entrypoint.sh

#!/bin/sh
__MEMPOOL_BACKEND_MAINNET_HTTP_HOST__=${BACKEND_MAINNET_HTTP_HOST:=127.0.0.1}
__MEMPOOL_BACKEND_MAINNET_HTTP_PORT__=${BACKEND_MAINNET_HTTP_PORT:=8999}
__MEMPOOL_FRONTEND_HTTP_PORT__=${FRONTEND_HTTP_PORT:=8080}

sed -i "s/__MEMPOOL_BACKEND_MAINNET_HTTP_HOST__/${__MEMPOOL_BACKEND_MAINNET_HTTP_HOST__}/g" /etc/nginx/conf.d/nginx-mempool.conf
sed -i "s/__MEMPOOL_BACKEND_MAINNET_HTTP_PORT__/${__MEMPOOL_BACKEND_MAINNET_HTTP_PORT__}/g" /etc/nginx/conf.d/nginx-mempool.conf

cp /etc/nginx/nginx.conf /patch/nginx.conf
sed -i "s/__MEMPOOL_FRONTEND_HTTP_PORT__/${__MEMPOOL_FRONTEND_HTTP_PORT__}/g" /patch/nginx.conf
cat /patch/nginx.conf > /etc/nginx/nginx.conf

# Runtime overrides - read env vars defined in docker compose

__TESTNET_ENABLED__=${TESTNET_ENABLED:=false}
__SIGNET_ENABLED__=${SIGNET_ENABLED:=false}
__LIQUID_ENABLED__=${LIQUID_EANBLED:=false}
__LIQUID_TESTNET_ENABLED__=${LIQUID_TESTNET_ENABLED:=false}
__BISQ_ENABLED__=${BISQ_ENABLED:=false}
__BISQ_SEPARATE_BACKEND__=${BISQ_SEPARATE_BACKEND:=false}
__ITEMS_PER_PAGE__=${ITEMS_PER_PAGE:=10}
__KEEP_BLOCKS_AMOUNT__=${KEEP_BLOCKS_AMOUNT:=8}
__NGINX_PROTOCOL__=${NGINX_PROTOCOL:=http}
__NGINX_HOSTNAME__=${NGINX_HOSTNAME:=localhost}
__NGINX_PORT__=${NGINX_PORT:=8999}
__BLOCK_WEIGHT_UNITS__=${BLOCK_WEIGHT_UNITS:=4000000}
__MEMPOOL_BLOCKS_AMOUNT__=${MEMPOOL_BLOCKS_AMOUNT:=8}
__BASE_MODULE__=${BASE_MODULE:=mempool}
__MEMPOOL_WEBSITE_URL__=${MEMPOOL_WEBSITE_URL:=https://mempool.space}
__LIQUID_WEBSITE_URL__=${LIQUID_WEBSITE_URL:=https://liquid.network}
__BISQ_WEBSITE_URL__=${BISQ_WEBSITE_URL:=https://bisq.markets}
__MINING_DASHBOARD__=${MINING_DASHBOARD:=true}
__LIGHTNING__=${LIGHTNING:=false}

# Export as environment variables to be used by envsubst
export __TESTNET_ENABLED__
export __SIGNET_ENABLED__
export __LIQUID_ENABLED__
export __LIQUID_TESTNET_ENABLED__
export __BISQ_ENABLED__
export __BISQ_SEPARATE_BACKEND__
export __ITEMS_PER_PAGE__
export __KEEP_BLOCKS_AMOUNT__
export __NGINX_PROTOCOL__
export __NGINX_HOSTNAME__
export __NGINX_PORT__
export __BLOCK_WEIGHT_UNITS__
export __MEMPOOL_BLOCKS_AMOUNT__
export __BASE_MODULE__
export __MEMPOOL_WEBSITE_URL__
export __LIQUID_WEBSITE_URL__
export __BISQ_WEBSITE_URL__
export __MINING_DASHBOARD__
export __LIGHTNING__

folder=$(find /var/www/mempool -name "config.js" | xargs dirname)
echo ${folder}
envsubst < ${folder}/config.template.js > ${folder}/config.js

exec "$@"