Travis deploy script to push the same image for latest and semver on Dockerhub (push latest only if semver is highest)

no need to manage latest tag on git repo anymore

.travis.yml

@@ -20,14 +20,7 @@ deploy:
       branch: master
 
   - provider: script
-    script: ./gradlew dockerPushLatest
-    skip_cleanup: true
-    on:
-      tags: true
-      condition: $TRAVIS_TAG = latest
-
-  - provider: script
-    script: ./gradlew dockerPushSemVer
+    script: bash ./.travis/deploy-semver.sh
     skip_cleanup: true
     on:
       tags: true

.travis/deploy-semver.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+vergte() {
+    [  "$1" = "$(echo -e "$1\n$2" | sort -rV | head -n1)" ]
+}
+
+vergt() {
+    [ "$1" = "$2" ] && return 1 || vergte $1 $2
+}
+
+HIGHEST_TAG=$(curl -sk https://api.github.com/repos/gotson/komga/tags | jq -r '.[].name' | grep ^v | tr -d v | sort -rV | head -n1)
+CURRENT_TAG=$(echo ${TRAVIS_TAG} | tr -d v)
+
+echo HIGHEST_TAG version: ${HIGHEST_TAG}
+echo CURRENT_TAG version: ${CURRENT_TAG}
+
+if vergte ${CURRENT_TAG} ${HIGHEST_TAG}
+then
+  echo Current tag is highest, deploying SemVer and Latest
+  ./gradlew dockerPushLatest dockerPushSemVer
+else
+  echo Current tag is not highest, deploying SemVer only
+  ./gradlew dockerPushSemVer
+fi