Do not depend on the alpine/edge (as resolved artifacts are dangling). (

#33)

Do not depend on the alpine/edge (as resolved artifacts are dangling).
Instead depend on the stable `v3.18`.

In general it's a bad practice when `bazel test //...` brakes because
someone else (periodic) actions.

The same problem applies to Wolfi... (without artifacts cache).

After this PR: `bazel test //...` works.

e2e/smoke/README.md

@@ -1,5 +1,5 @@
 # smoke test
 
-This e2e exercises the repo from an end-users perpective.
+This e2e exercises the repo from an end-users perspective.
 It catches mistakes in our install instructions, or usages that fail when called from an "external" repository to rules_apko.
 It is also used by the presubmit check for the Bazel Central Registry.

e2e/smoke/apko.yaml

@@ -1,6 +1,6 @@
 contents:
   repositories:
-    - https://dl-cdn.alpinelinux.org/alpine/edge/main
+    - https://dl-cdn.alpinelinux.org/alpine/v3.18/main
   packages:
     - busybox
 

examples/lock/apko.yaml

@@ -1,10 +1,9 @@
 contents:
   repositories:
-    - https://dl-cdn.alpinelinux.org/alpine/edge/main
+    - https://dl-cdn.alpinelinux.org/alpine/v3.18/main
   packages:
     - busybox
 
-
 # optional environment configuration
 environment:
   PATH: /usr/sbin:/sbin:/usr/bin:/bin
@@ -15,10 +14,9 @@ cmd: /bin/sh -l
 # in the image
 os-release:
   id: alpine
-  version-id: '3.16.0'
-  name: 'Alpine Slim'
-  pretty-name: 'Alpine Slim (apko)'
+  version-id: "3.16.0"
+  name: "Alpine Slim"
+  pretty-name: "Alpine Slim (apko)"
 
 archs:
   - amd64
-