cicd: build in pipeline

.gitlab-ci.yml

+build:
+  variables:
+    os: linux
+    comm: behealthy
+  image: docker.io/golang:1.21
+  before_script:
+    - go mod download
+  script:
+    - |
+      for arch in amd64 arm64; do
+        GOOS=$os GOARCH=$arch CGO_ENABLED=0 go build -o "$comm-$os-$arch" || exit 1
+        curl -H "JOB-TOKEN: $CI_JOB_TOKEN" --upload-file ./$comm-$os-$arch "${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/generic/behealthy/latest/$comm-$os-$arch" || exit 1
+      done