diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 1973787..8fee6e8 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -30,6 +30,8 @@ jobs:
         flavor: |
           latest=true
         tags: |
+          type=sha,short=true
+          type=ref,event=pr
           type=ref,event=branch
           type=ref,event=tag
           type=semver,pattern={{version}}
diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml
index e411f1f..365abe2 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/golangci-lint.yml
@@ -5,7 +5,6 @@ on:
       - "go.sum"
       - "go.mod"
       - "**.go"
-      - "scripts/errcheck_excludes.txt"
       - ".github/workflows/golangci-lint.yml"
       - ".golangci.yml"
   pull_request:
@@ -13,7 +12,6 @@ on:
       - "go.sum"
       - "go.mod"
       - "**.go"
-      - "scripts/errcheck_excludes.txt"
       - ".github/workflows/golangci-lint.yml"
       - ".golangci.yml"
 
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 8d11b19..f07eae2 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -16,7 +16,7 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  lint:
+  test:
     runs-on: ubuntu-latest
 
     steps:
@@ -27,4 +27,3 @@ jobs:
       - run: go install github.com/google/go-licenses@latest
       - run: $(go env GOPATH)/bin/go-licenses check . --disallowed_types forbidden,restricted,unknown
       - run: make test
-
diff --git a/Makefile b/Makefile
index c1d3130..dd48474 100644
--- a/Makefile
+++ b/Makefile
@@ -11,26 +11,22 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Ensure that 'all' is the default target otherwise it will be the first target from Makefile.common.
-all::
+all: build
 
-ARCH = $(shell go env GOARCH)
-OS = $(shell go env GOOS)
-
-.PHONY: build LOCALBIN
+.PHONY: build
 build:
-	CGO_ENABLED=0 GOOS=${OS} GOARCH=${ARCH} go build -o .build/${OS}-${ARCH}/emqx-exporter
+	go build -o $(LOCALBIN)/$(PROJECT_NAME)
 
 .PHONY: test
-test:
-	go test -race --cover -covermode=atomic -coverpkg=./... -coverprofile=cover.out ./...
+test: build
+	go test -v -race --cover -covermode=atomic -coverpkg=./... -coverprofile=cover.out ./...
 
-DOCKER_IMAGE_NAME  ?= emqx-exporter
-.PHONY: docker-build
-docker-build:
-	docker build -t ${DOCKER_IMAGE_NAME} .
+.PHONY: docker
+docker:
+	docker build -t $(PROJECT_NAME) .
 
-## Location to install dependencies to
-LOCALBIN ?= $(shell pwd)/.build/${OS}-${ARCH}
+PROJECT_DIR := $(shell dirname $(abspath $(lastword $(MAKEFILE_LIST))))
+PROJECT_NAME := emqx-exporter
+LOCALBIN ?= $(PROJECT_DIR)/bin
 $(LOCALBIN):
-	mkdir -p $(LOCALBIN)
\ No newline at end of file
+	mkdir -p $(LOCALBIN)
diff --git a/main_test.go b/main_test.go
index 400f39b..fc64555 100644
--- a/main_test.go
+++ b/main_test.go
@@ -19,34 +19,34 @@ import (
 	"net/http"
 	"os"
 	"os/exec"
-	"path/filepath"
 	"testing"
 	"time"
 
 	"github.com/prometheus/procfs"
 )
 
-var (
-	binary = filepath.Join(os.Getenv("GOPATH"), "bin/emqx-exporter")
-)
-
 const (
-	address = "localhost:19100"
+	address    = "localhost:19100"
+	binary     = "bin/emqx-exporter"
+	configFile = "config/example/config.yaml"
 )
 
 func TestFileDescriptorLeak(t *testing.T) {
 	if _, err := os.Stat(binary); err != nil {
-		t.Skipf("emqx-exporter binary not available, try to run `make build` first: %s", err)
+		// t.Skipf("emqx-exporter binary not available, try to run `make build` first: %s", err)
+		t.Errorf("emqx-exporter binary not available, try to run `make build` first: %s", err)
 	}
+
 	fs, err := procfs.NewDefaultFS()
 	if err != nil {
-		t.Skipf("proc filesystem is not available, but currently required to read number of open file descriptors: %s", err)
+		// t.Skipf("proc filesystem is not available, but currently required to read number of open file descriptors: %s", err)
+		t.Errorf("proc filesystem is not available, but currently required to read number of open file descriptors: %s", err)
 	}
 	if _, err := fs.Stat(); err != nil {
 		t.Errorf("unable to read process stats: %s", err)
 	}
 
-	exporter := exec.Command(binary, "--web.listen-address", address)
+	exporter := exec.Command(binary, "--web.listen-address", address, "--config.file", configFile)
 	test := func(pid int) error {
 		if err := queryExporter(address); err != nil {
 			return err
@@ -79,35 +79,6 @@ func TestFileDescriptorLeak(t *testing.T) {
 	}
 }
 
-func TestHandlingOfDuplicatedMetrics(t *testing.T) {
-	if _, err := os.Stat(binary); err != nil {
-		t.Skipf("emqx-exporter binary not available, try to run `make build` first: %s", err)
-	}
-
-	dir, err := os.MkdirTemp("", "node-exporter")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(dir)
-
-	content := []byte("dummy_metric 1\n")
-	if err := os.WriteFile(filepath.Join(dir, "a.prom"), content, 0600); err != nil {
-		t.Fatal(err)
-	}
-	if err := os.WriteFile(filepath.Join(dir, "b.prom"), content, 0600); err != nil {
-		t.Fatal(err)
-	}
-
-	exporter := exec.Command(binary, "--web.listen-address", address, "--collector.textfile.directory", dir)
-	test := func(_ int) error {
-		return queryExporter(address)
-	}
-
-	if err := runCommandAndTests(exporter, address, test); err != nil {
-		t.Error(err)
-	}
-}
-
 func queryExporter(address string) error {
 	resp, err := http.Get(fmt.Sprintf("http://%s/metrics", address))
 	if err != nil {