install goreleaser in ci

.circleci/config.yml

@@ -53,6 +53,20 @@ jobs:
   publishing:
     executor: go
     steps:
+      - run:
+        name: Install Goreleaser
+        command: |
+          curl \
+            --silent \
+            --show-error \
+            --fail \
+            --location \
+            --header "Accept: application/tar+gzip, application/x-gzip, application/octet-stream" \
+            -o - \
+            "https://github.com/goreleaser/goreleaser/releases/download/v${goreleaser}/goreleaser_Linux_x86_64.tar.gz" \
+          | tar --no-same-owner -C /usr/bin/ -xz goreleaser \
+            && chmod 0755 /usr/bin/goreleaser \
+            && /usr/bin/goreleaser -v
       - run: echo Done
 
 # version: 2