Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -18,6 +18,7 @@ before_script:
 stages:
   - test
   - build
+  - tag
   - doc-update
 
 build:
@@ -45,6 +46,17 @@ go-test:
     - go mod vendor -v
     - go test ./... -v
 
+tag:
+    stage: tag
+    only:
+        - master
+    image: $DOCKER_IMAGE
+    script:
+        - git remote add origin_tags git@$GITLAB_SERVER:elixxir/xxdk-wasm.git || true
+        - GOOS=js GOARCH=wasm go build -ldflags '-w -s' -o release/xxdk.wasm main.go
+        - git tag $(sha256sum release/xxdk.wasm | awk '{ print $1 }') -f
+        - git push origin_tags -f --tags
+
 # This pipeline job will attempt to have pkg.go.dev update docs for xxdk-wasm.
 #
 # pkg.go.dev relies on the proxy.golang.org service (go module cache/proxy) to discover versions of