Add a warning about using Watchtower in production (#1839)

* Add a warning about using Watchtower in production

* Update .all-contributorsrc

.all-contributorsrc

@@ -5,6 +5,30 @@
   "imageSize": 100,
   "commit": false,
   "contributors": [
+    {
+      "login": "piksel",
+      "name": "nils måsén",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/807383?v=4",
+      "profile": "https://piksel.se",
+      "contributions": [
+        "code",
+        "doc",
+        "maintenance",
+        "review"
+      ]
+    },
+    {
+      "login": "simskij",
+      "name": "Simon Aronsson",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/1596025?v=4",
+      "profile": "http://simme.dev",
+      "contributions": [
+        "code",
+        "doc",
+        "maintenance",
+        "review"
+      ]
+    },
     {
       "login": "Codelica",
       "name": "James",
@@ -273,18 +297,6 @@
         "code"
       ]
     },
-    {
-      "login": "simskij",
-      "name": "Simon Aronsson",
-      "avatar_url": "https://avatars0.githubusercontent.com/u/1596025?v=4",
-      "profile": "http://simme.dev",
-      "contributions": [
-        "code",
-        "maintenance",
-        "review",
-        "doc"
-      ]
-    },
     {
       "login": "Ansem93",
       "name": "Ansem93",
@@ -508,16 +520,6 @@
         "doc"
       ]
     },
-    {
-      "login": "piksel",
-      "name": "nils måsén",
-      "avatar_url": "https://avatars2.githubusercontent.com/u/807383?v=4",
-      "profile": "https://piksel.se",
-      "contributions": [
-        "doc",
-        "code"
-      ]
-    },
     {
       "login": "arnested",
       "name": "Arne Jørgensen",

README.md

@@ -31,6 +31,8 @@ $ docker run --detach \
     containrrr/watchtower
 ```
 
+Watchtower is intended to be used in homelabs, media centers, local dev environments, and similar. We do **not** recommend using Watchtower in a commercial or production environment. If that is you, you should be looking into using Kubernetes. If that feels like too big a step for you, please look into solutions like [MicroK8s](https://microk8s.io/) and [k3s](https://k3s.io/) that take away a lot of the toil of running a Kubernetes cluster. 
+
 ## Documentation
 The full documentation is available at https://containrrr.dev/watchtower.