Fix regex

Author: thomasleplus

.github/workflows/docker-build-push.yml

@@ -76,8 +76,8 @@ jobs:
         run: |
           # shellcheck disable=SC2086
           VERSION="$(\grep ${IMAGE}/Dockerfile -e '^FROM' | \head -n 1 | \sed -e 's/@.*$//; s/^.*://;')"
-          if [[ "${VERSION}" =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+\-minimal$ ]] ; then
-            \echo "VERSION=${VERSION/[0-9][0-9]*-minimal/}" >> "${GITHUB_ENV}"
+          if [[ "${VERSION}" =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]\-minimal$ ]] ; then
+            \echo "VERSION=${VERSION/\.[0-9]-minimal/}" >> "${GITHUB_ENV}"
           fi
       - name: Check if release already exists
         if: env.VERSION != ''