ci: use internal Gitea endpoint

ci/release-linux.sh

@@ -14,7 +14,7 @@ version="${CI_COMMIT_TAG#v}"
 [[ -n "${GITEA_TOKEN:-}" ]] || { echo "GITEA_TOKEN is required" >&2; exit 2; }
 [[ -n "${ZOT_USERNAME:-}" && -n "${ZOT_PASSWORD:-}" ]] || { echo "Zot credentials are required" >&2; exit 2; }
 
-gitea_base="${GITEA_BASE:-https://git.oeo.one}"
+gitea_base="${GITEA_BASE:-http://gitea:3000}"
 gitea_host="${gitea_base#https://}"
 gitea_host="${gitea_host#http://}"
 gitea_host="${gitea_host%%/*}"