add pre-commit

.gitpod.Dockerfile

@@ -8,3 +8,5 @@ RUN sudo mv bin/* /usr/bin/ && \
 
 RUN yarn global add nodemon
 RUN echo "export PATH=\$PATH:`yarn global bin`" >> ~/.bashrc
+
+RUN pip install pre-commit

.pre-commit-config.yaml

@@ -0,0 +1,16 @@
+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+repos:
+-   repo: https://github.com/tekwizely/pre-commit-golang
+    rev: master
+    hooks:
+    #
+    # Go Mod Tidy
+    #
+    -   id: go-mod-tidy
+    -   id: go-mod-tidy-repo
+    #
+    # Formatters
+    #
+    -   id: go-fmt
+    -   id: go-fmt-repo