From 935de92f2ef4787f6e515ae8d25f5eca98f1a88f Mon Sep 17 00:00:00 2001
From: Frederik Ring <frederik.ring@gmail.com>
Date: Sun, 22 Aug 2021 20:16:24 +0200
Subject: [PATCH] only tag proper releases as latest

---
 .circleci/config.yml | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 512687a..29bbf63 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -43,10 +43,13 @@ jobs:
             docker context create docker-volume-backup
             docker buildx create docker-volume-backup --name docker-volume-backup --use
             docker buildx inspect --bootstrap
+            tag_args="-t offen/docker-volume-backup:$CIRCLE_TAG"
+            if [[ "$CIRCLE_TAG" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+              # prerelease tags like `v2.0.0-alpha.1` should not be released as `latest`
+              tag_args="$tag_args -t offen/docker-volume-backup:latest"
+            fi
             docker buildx build --platform linux/amd64,linux/arm64,linux/arm/v7 \
-              -t offen/docker-volume-backup:$CIRCLE_TAG \
-              -t offen/docker-volume-backup:latest \
-              . --push
+               $tag_args . --push
 
 workflows:
   version: 2