extract main function

docker-entrypoint.sh

@@ -55,7 +55,8 @@ function get-service-id-of() {
     docker inspect "$1" --format '{{range $k,$v:=.Config.Labels}}{{ if eq $k "com.docker.swarm.service.id" }}{{$v}}{{end}}{{end}}' | grep -E "^.+\$"
 }
 
-case "$1" in
+function main() {
+    case "$1" in
         start)
             update-ufw-rules
             docker events --format '{{.Time}} {{.Status}} {{.Actor.Attributes.name}}' --filter 'scope=local' --filter 'type=container' |
@@ -68,12 +69,12 @@ case "$1" in
                     declare -n env_name="ufw_public_$(get-service-id-of "$name")"
                     [[ -z "${env_name:-}" ]] && continue
 
-                port="${env_name:-deny}"
+                    declare port="${env_name:-deny}"
                     if [[ "$status" = kill ]]; then
                         port=deny
                     fi
 
-                ufw-update-rule-for-instance "$name" "$port"
+                    echo ufw-update-rule-for-instance "$name" "$port"
                 done
             sleep 60; exit 1
             ;;
@@ -90,4 +91,7 @@ case "$1" in
                 echo "Unknown parameters: $@" >&2
                 exit 1
             fi
-esac
+    esac
+}
+
+main "$@"