Update jenkinsfile

Author: thespad

.github/workflows/external_trigger.yml

@@ -18,7 +18,7 @@ jobs:
           fi
           echo "**** External trigger running off of main branch. To disable this trigger, set a Github secret named \"PAUSE_EXTERNAL_TRIGGER_SYSLOG_NG_MAIN\". ****"
           echo "**** Retrieving external version ****"
-          EXT_RELEASE=$(curl -sL "http://dl-cdn.alpinelinux.org/alpine/v3.14/main/x86_64/APKINDEX.tar.gz" | tar -xz -C /tmp \
+          EXT_RELEASE=$(curl -sL "http://dl-cdn.alpinelinux.org/alpine/v3.15/main/x86_64/APKINDEX.tar.gz" | tar -xz -C /tmp \
             && awk '/^P:'"syslog-ng"'$/,/V:/' /tmp/APKINDEX | sed -n 2p | sed 's/^V://')
           if [ -z "${EXT_RELEASE}" ] || [ "${EXT_RELEASE}" == "null" ]; then
             echo "**** Can't retrieve external version, exiting ****"

Jenkinsfile

@@ -26,7 +26,7 @@ pipeline {
     PR_DOCKERHUB_IMAGE = 'lspipepr/syslog-ng'
     DIST_IMAGE = 'alpine'
     DIST_TAG = '3.14'
-    DIST_REPO = 'http://dl-cdn.alpinelinux.org/alpine/v3.14/main/'
+    DIST_REPO = 'http://dl-cdn.alpinelinux.org/alpine/v3.15/main/'
     DIST_REPO_PACKAGES = 'syslog-ng'
     MULTIARCH = 'true'
     CI='true'

README.md

@@ -232,5 +232,6 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **18.12.21:** - Rebase to Alpine 3.15.
 * **01.07.21:** - Rebase to Alpine 3.14.
 * **26.05.21:** - Initial release.