Improve makefile

script/release-packages.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+set -e
+
+if [ -n "${SEMAPHORE_GIT_TAG_NAME}" ]; then
+  echo "Releasing packages..."
+else
+  echo "Skipping release"
+  exit 0
+fi
+
+rm -rf dist
+
+for os in linux darwin windows freebsd openbsd; do
+    goreleaser release --snapshot --skip=publish -p 2 --timeout="90m" --config "$(go run ./internal/release "$os")"
+    go clean -cache
+done
+
+cat dist/**/*_checksums.txt >> dist/traefik_${VERSION}_checksums.txt
+rm dist/**/*_checksums.txt
+tar cfz dist/traefik-${VERSION}.src.tar.gz \
+  --exclude-vcs \
+  --exclude .idea \
+  --exclude .travis \
+  --exclude .semaphoreci \
+  --exclude .github \
+  --exclude dist .
+
+chown -R $(id -u):$(id -g) dist/