AutoDevReverseProxy/hostman.sh

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2022-11-04 13:01:36 +01:00
#!/usr/bin/env sh
# Configurable Variables
DOCKER_SOCK_PATH="/tmp/docker.sock"
HOST_CONF_PATH="/tmp/hosts"
NETWORK_NAME="reverseproxy"
query_docker () {
echo $(curl --unix-socket $DOCKER_SOCK_PATH --silent -g http://v1.41/$1/json$2)
}
while true
do
PROXY_HOST_CONF=""
CONTAINER_LIST=$(query_docker "containers" "?filters={%22network%22:[%22${NETWORK_NAME}%22],%22status%22:[%22running%22]}" | jq -cr '.[].Id')
for id in $CONTAINER_LIST
do
# Query individual container to access Env variables
# Filter Env for HOSTNAME, remove list parenthesis and split/only keep values
HOST_NAMES=$(query_docker "containers/${id}" | jq -cr '.Config.Env[] | select(contains("VIRTUAL_HOST=")) | split("=")[1]')
for hostname in $HOST_NAMES
do
PROXY_HOST_CONF="$PROXY_HOST_CONF\n127.0.0.1 $hostname # Added by hostman"
done
done
FILTERED_HOSTS=$(grep -ve "# Added by hostman$" $HOST_CONF_PATH)
echo -e "$FILTERED_HOSTS$PROXY_HOST_CONF" > $HOST_CONF_PATH
sleep 10
done