Add wp-install script

hack/docker/bin/wp-install

@@ -0,0 +1,32 @@
+#!/bin/bash
+# Copyright 2019 Pressinfra SRL.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+set -e
+set -o pipefail
+
+title="$1"
+url="$2"
+user="$3"
+# escape quotes
+# due to: https://github.com/wp-cli/wp-cli/issues/5089
+pass=$(echo $4 | sed -e "s/'/\\\'/g" -e 's/"/\\"/g')
+email="$5"
+
+wp core install \
+    ---title="$title" \
+    ---url="$url" \
+    ---admin_user="$user" \
+    ---admin_password="$pass" \
+    ---admin_email="$email" \
+    ---skip-email