Update Go to 1.21.5 and replace go-watcher with guard

.gitlab-ci.yml

@@ -14,7 +14,7 @@ linters:
     - golangci-lint run
 
 unit tests:
-  image: golang:1.21.3
+  image: golang:1.21.5
   stage: test
   script:
     - go version
@@ -23,7 +23,7 @@ unit tests:
   coverage: '/total:\s+\(statements\)\s+(\d+.\d+\%)/'
 
 govulncheck:
-  image: golang:1.21.3
+  image: golang:1.21.5
   stage: test
   script:
     - go version

.golangci.yml

@@ -27,3 +27,4 @@ linters:
     - misspell
     - staticcheck
     - unused
+    - gosimple

deployment/ci/Dockerfile

-FROM golang:1.21.3-alpine3.17 as builder
+FROM golang:1.21.5-alpine3.17 as builder
 
 RUN apk add git
 

deployment/compose/Dockerfile

-FROM golang:1.21.3
+FROM golang:1.21.5
 
-ENV GO111MODULE=on
-
-RUN go install github.com/canthefason/go-watcher/cmd/watcher@v0.2.4
+RUN go install github.com/ysmood/kit/cmd/guard@v0.25.11
 
 ADD . /go/src/gitlab.eclipse.org/eclipse/xfsc/tsa/infohub
 
 WORKDIR /go/src/gitlab.eclipse.org/eclipse/xfsc/tsa/infohub
 
-RUN go install -mod=vendor ./cmd/infohub/...
-
 EXPOSE 8080
 
-ENTRYPOINT ["sh", "-c", "/go/bin/watcher -run gitlab.eclipse.org/eclipse/xfsc/tsa/infohub/cmd/infohub -watch gitlab.eclipse.org/eclipse/xfsc/tsa/infohub"]
+ENTRYPOINT ["sh", "-c", "/go/bin/guard -w '**/*.go' -- go run -mod=vendor ./cmd/infohub/..."]