32 lines
1 KiB
Bash
32 lines
1 KiB
Bash
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#!/usr/bin/env sh
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# Configurable Variables
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DOCKER_SOCK_PATH="/tmp/docker.sock"
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HOST_CONF_PATH="/tmp/hosts"
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NETWORK_NAME="reverseproxy"
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query_docker () {
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echo $(curl --unix-socket $DOCKER_SOCK_PATH --silent -g http://v1.41/$1/json$2)
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}
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while true
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do
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PROXY_HOST_CONF=""
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CONTAINER_LIST=$(query_docker "containers" "?filters={%22network%22:[%22${NETWORK_NAME}%22],%22status%22:[%22running%22]}" | jq -cr '.[].Id')
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for id in $CONTAINER_LIST
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do
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# Query individual container to access Env variables
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# Filter Env for HOSTNAME, remove list parenthesis and split/only keep values
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HOST_NAMES=$(query_docker "containers/${id}" | jq -cr '.Config.Env[] | select(contains("VIRTUAL_HOST=")) | split("=")[1]')
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for hostname in $HOST_NAMES
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do
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PROXY_HOST_CONF="$PROXY_HOST_CONF\n127.0.0.1 $hostname # Added by hostman"
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done
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done
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FILTERED_HOSTS=$(grep -ve "# Added by hostman$" $HOST_CONF_PATH)
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echo -e "$FILTERED_HOSTS$PROXY_HOST_CONF" > $HOST_CONF_PATH
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sleep 10
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done
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