diff --git a/.editorconfig b/.editorconfig
index 576c5d0..b14f408 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -12,5 +12,5 @@ trim_trailing_whitespace = true
 [*.{go,sh}]
 indent_style = tab
 
-[*.yaml]
+[*.{yaml,yml}]
 indent_size = 2
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
new file mode 100644
index 0000000..fde29df
--- /dev/null
+++ b/.github/workflows/go.yml
@@ -0,0 +1,80 @@
+name: Go
+on: [push]
+jobs:
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          only-new-issues: true
+
+
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+
+    - uses: actions/setup-go@v5
+      with:
+        go-version: "1.20"
+
+    - uses: actions/checkout@v4
+      with:
+        path: gopath/src/github.com/teamwork/kommentaar
+
+    - name: Test & coverage
+      env:
+        GO111MODULE: "off"
+        GOPATH: ${{ github.workspace }}/gopath
+      run: |
+        cd $GOPATH/src/github.com/teamwork/kommentaar
+
+        go test -coverprofile=full_coverage -race ./...
+
+    - name: Upload coverage
+      env:
+        COVERALLS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GOPATH: ${{ github.workspace }}/gopath
+      run: |
+        export PATH="$GOPATH/bin:$PATH"
+        go install github.com/mattn/goveralls@latest
+        cd $GOPATH/src/github.com/teamwork/kommentaar
+        goveralls -coverprofile=full_coverage -service=github
+
+
+
+  build:
+    name: Build and push image
+    runs-on: ubuntu-latest
+    needs: [lint, test]
+    if: startsWith(github.event.ref, 'refs/tags/v')
+    steps:
+
+    - name: Check out the repo
+      uses: actions/checkout@v4
+
+    - name: Log in to Docker Hub
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Extract metadata (tags, labels) for Docker
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        images: teamwork/kommentaar
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v5
+      with:
+        context: .
+        file: ./Dockerfile
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
diff --git a/.gitignore b/.gitignore
index ec14789..8a5f658 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,5 @@
 /coverage.html
 .DS_Store
 .idea
+full_coverage
+*_coverage
diff --git a/kommentaar b/kommentaar
new file mode 100755
index 0000000..0dfa88b
Binary files /dev/null and b/kommentaar differ
diff --git a/main_test.go b/main_test.go
index 9694662..3498800 100644
--- a/main_test.go
+++ b/main_test.go
@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"flag"
 	"go/build"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -30,7 +29,7 @@ func TestStart(t *testing.T) {
 }
 
 func TestOpenAPI2(t *testing.T) {
-	tests, err := ioutil.ReadDir("./testdata/openapi2/src")
+	tests, err := os.ReadDir("./testdata/openapi2/src")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -39,19 +38,19 @@ func TestOpenAPI2(t *testing.T) {
 		t.Run(tt.Name(), func(t *testing.T) {
 			path := "./testdata/openapi2/src/" + tt.Name()
 
-			want, err := ioutil.ReadFile(path + "/want.yaml")
+			want, err := os.ReadFile(path + "/want.yaml")
 			if err != nil && !os.IsNotExist(err) {
 				t.Fatalf("could not read output: %v", err)
 			}
 			want = append(bytes.TrimSpace(want), '\n')
 
-			wantJSON, err := ioutil.ReadFile(path + "/want.json")
+			wantJSON, err := os.ReadFile(path + "/want.json")
 			if err != nil && !os.IsNotExist(err) {
 				t.Fatalf("could not read output: %v", err)
 			}
 			wantJSON = append(bytes.TrimSpace(wantJSON), '\n')
 
-			wantErr, err := ioutil.ReadFile(path + "/wantErr")
+			wantErr, err := os.ReadFile(path + "/wantErr")
 			if err != nil && !os.IsNotExist(err) {
 				t.Fatalf("could not read wantErr: %v", err)
 			}
diff --git a/srvhttp/srvhttp.go b/srvhttp/srvhttp.go
index bc5bbad..88a3b5d 100644
--- a/srvhttp/srvhttp.go
+++ b/srvhttp/srvhttp.go
@@ -5,7 +5,6 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 
@@ -105,7 +104,7 @@ func run(
 ) (string, error) {
 
 	if args.NoScan {
-		o, err := ioutil.ReadFile(file)
+		o, err := os.ReadFile(file)
 		return string(o), err
 	}
 
diff --git a/srvhttp/srvhttp_test.go b/srvhttp/srvhttp_test.go
index a4b86d5..34c3e65 100644
--- a/srvhttp/srvhttp_test.go
+++ b/srvhttp/srvhttp_test.go
@@ -1,8 +1,8 @@
 package srvhttp
 
 import (
-	"io/ioutil"
 	"net/http/httptest"
+	"os"
 	"testing"
 
 	"github.com/teamwork/test/diff"
@@ -41,7 +41,7 @@ func TestFromFile(t *testing.T) {
 		YAMLFile: "../testdata/openapi2/src/blank-line/want.yaml",
 	}
 
-	want, err := ioutil.ReadFile("../testdata/openapi2/src/blank-line/want.yaml")
+	want, err := os.ReadFile("../testdata/openapi2/src/blank-line/want.yaml")
 	if err != nil {
 		t.Fatalf("could not read file: %v", err)
 	}