new: [searx] add charm

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

searx/hooks/web_proxy-relation-joined

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -e
+
+URL=$(relation-get url) || exit 1
+
+config-add "\
+services:
+  $MASTER_BASE_SERVICE_NAME:
+    environment:
+      BASE_URL: $URL
+"

searx/metadata.yml

@@ -0,0 +1,16 @@
+docker-image: docker.0k.io/searx:0.18.0-237  ## from: searx/searx:0.18.0-237-e2fb5008
+config-resources:
+  - /etc/searx
+
+default-options:
+
+uses:
+  web-proxy:
+    #constraint: required | recommended | optional
+    #auto: pair | summon | none ## default: pair
+    constraint: recommended
+    auto: pair
+    solves:
+      proxy: "Public access"
+    default-options:
+      target: !var-expand ${MASTER_BASE_SERVICE_NAME}:8080