Feature 57 (config and provisioning): modules declare config and provisions, their files rendered from templates; synced with main (issues of feature 57, 874)

modules/showcase/module.json

@@ -1,6 +1,7 @@
 {
   "module": "showcase",
   "version": "1",
+  "templates": "templates",
   "slug": "show",
   "capabilities": [
     "container-runtime"
@@ -74,6 +75,11 @@
         "name": "helper",
         "kind": "upstream",
         "from": "alpine@sha256:28bd5fe8b56d1bd048e5babf5b10710ebe0bae67db86916198a6eec434943f8b"
+      },
+      {
+        "name": "templates",
+        "kind": "archive",
+        "from": "templates"
       }
     ]
   },
@@ -108,7 +114,7 @@
       "type": "file",
       "path": "${dir:state}/showcase.env",
       "mode": "0600",
-      "content": "SHOWCASE_GREETING=hello\nSHOWCASE_EVERY_SECONDS=30\nSHOWCASE_STATE=/var/lib/showcase\nSHOWCASE_DATABASE=${bound:postgres-database:at}\nSHOWCASE_LISTEN=${port:8080}\n"
+      "template": "templates/showcase.env"
     },
     {
       "id": "packed",