remove alpine-3.18 platform from molecule default platforms

Author: nemca

.config/molecule/config.yml

@@ -24,14 +24,6 @@ platforms:
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:rw
     command: /usr/sbin/init
-  - name: alpine-3.18
-    image: alpine:3.18
-    dockerfile: ../common/Dockerfile.j2
-    privileged: true
-    cgroupns_mode: host
-    volumes:
-      - /sys/fs/cgroup:/sys/fs/cgroup:rw
-    command: /sbin/init
   - name: alpine-3.19
     image: alpine:3.19
     dockerfile: ../common/Dockerfile.j2

README.md

@@ -174,7 +174,6 @@ AlmaLinux:
   - 8
   - 9
 Alpine:
-  - 3.18
   - 3.19
   - 3.20
   - 3.21
@@ -198,6 +197,7 @@ SUSE/SLES:
 Ubuntu:
   - jammy (22.04)
   - noble (24.04)
+  - plucky (25.04)
 ```
 
 ### NGINX Plus

vars/main.yml

@@ -31,7 +31,7 @@ nginx_supported_distributions:
     architectures: [x86_64, aarch64, s390x]
   alpine:
     name: Alpine Linux
-    versions: [3.18, 3.19, 3.20, 3.21]
+    versions: [3.19, 3.20, 3.21]
     architectures: [x86_64, aarch64]
   amazon:
     name: Amazon Linux