chore(emqx-init): troubleshooting

apps/emqx-init/entrypoint.sh

@@ -1,9 +1,21 @@
 #!/bin/bash
 
-echo "EMQX init started..."
-
 set -ex
 
+# Main
+case "${1}" in
+    '')
+        CURL_PARAMS="-s"
+        ;;
+    '--debug')
+        CURL_PARAMS="-v"
+        ;;
+    *)
+        echo "ERROR: Unknown option '${1}'" > /dev/stderr
+        exit 1
+esac
+
+
 : "${INIT_EMQX_HOST:=localhost}"
 : "${INIT_EMQX_PORT:=18083}"
 : "${INIT_EMQX_SUPER_USER}"
@@ -17,15 +29,18 @@ INIT_EMQX_BASE_API_URL="http://${INIT_EMQX_SUPER_USER}:${INIT_EMQX_SUPER_PASS}@$
 INIT_EMQX_AUTHN_API_URL="${INIT_EMQX_BASE_API_URL}/authentication/password_based:built_in_database/users"
 INIT_EMQX_AUTHZ_API_URL="${INIT_EMQX_BASE_API_URL}/authorization/sources/built_in_database/username"
 
-while ! curl -s "${INIT_EMQX_AUTHN_API_URL}"; do
+env | sort
+
+while ! curl ${CURL_PARAMS} "${INIT_EMQX_AUTHN_API_URL}"; do
     echo 'Waiting for EMQX to start...'
     sleep 5
 done
 
 echo 'EMQX started, ready to initialize...';
 
 # Authentication
-curl -s "${INIT_EMQX_AUTHN_API_URL}" \
+curl ${CURL_PARAMS} \
+     "${INIT_EMQX_AUTHN_API_URL}" \
      -H 'Content-Type: application/json' \
      -d "$(cat <<EOF
     {
@@ -43,7 +58,8 @@ if [ "${INIT_EMQX_IS_SUPERUSER}" -eq "true" ]; then
 fi
 
 # Authorization
-curl -s "${INIT_EMQX_AUTHZ_API_URL}" \
+curl ${CURL_PARAMS} \
+     "${INIT_EMQX_AUTHZ_API_URL}" \
      -H 'Content-Type: application/json' \
      -d "$(cat <<EOF
     [