diff --git a/build/base/Dockerfile b/build/base/Dockerfile
index 37aebaff..dcddb5fb 100644
--- a/build/base/Dockerfile
+++ b/build/base/Dockerfile
@@ -45,8 +45,7 @@ RUN mkdir -p /usr/share/man/man1mkdir -p /usr/share/man/man1 &&\
 
 ENV UNO_URL=https://raw.githubusercontent.com/dagwieers/unoconv/master/unoconv
 
-RUN apt-get install -y python3 &&\
-    curl -Ls $UNO_URL -o /usr/bin/unoconv &&\
+RUN curl -Ls $UNO_URL -o /usr/bin/unoconv &&\
     chmod +x /usr/bin/unoconv &&\
     ln -s /usr/bin/python3 /usr/bin/python &&\
     unoconv --version
diff --git a/build/tests/docker-entrypoint.sh b/build/tests/docker-entrypoint.sh
index 32294499..f51b3776 100755
--- a/build/tests/docker-entrypoint.sh
+++ b/build/tests/docker-entrypoint.sh
@@ -9,10 +9,8 @@ if [ "$CURRENT_USER" != "gotenberg" ]; then
     exit 1
 fi
 
-# Start the PM2 processes 
-# (Google Chrome headless & unoconv listener).
-# TODO just start chrome
-go run github.com/thecodingmachine/gotenberg/test/cmd/pm2
+# Start Google Chrome headless.
+go run test/cmd/chrome.go
 
 # Run our tests.
 if [ "$CODE_COVERAGE" = "1" ]; then
diff --git a/internal/app/xhttp/handler_test.go b/internal/app/xhttp/handler_test.go
index c4c78add..11c0731d 100644
--- a/internal/app/xhttp/handler_test.go
+++ b/internal/app/xhttp/handler_test.go
@@ -6,7 +6,6 @@ import (
 	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
-	"os"
 	"testing"
 
 	"github.com/labstack/echo/v4"
@@ -23,18 +22,6 @@ func TestPingHandler(t *testing.T) {
 	srv = New(config)
 	req := httptest.NewRequest(http.MethodGet, pingEndpoint, nil)
 	test.AssertStatusCode(t, http.StatusOK, srv, req)
-	// should returns a JSON as
-	// LOG_LEVEL is "DEBUG".
-	os.Setenv(conf.LogLevelEnvVar, "DEBUG")
-	config, err := conf.FromEnv()
-	assert.Nil(t, err)
-	srv = New(config)
-	req = httptest.NewRequest(http.MethodGet, pingEndpoint, nil)
-	rec := httptest.NewRecorder()
-	srv.ServeHTTP(rec, req)
-	assert.Equal(t, "application/json; charset=UTF-8", rec.Header().Get("Content-type"))
-	assert.Equal(t, http.StatusOK, rec.Code)
-	os.Unsetenv(conf.LogLevelEnvVar)
 }
 
 func TestMergeHandler(t *testing.T) {
diff --git a/internal/pkg/chrome/doc.go b/internal/pkg/chrome/doc.go
index 7b442802..c5431149 100644
--- a/internal/pkg/chrome/doc.go
+++ b/internal/pkg/chrome/doc.go
@@ -1 +1,3 @@
+// Package chrome helps starting
+// Google Chrome headless in background.
 package chrome
diff --git a/test/cmd/chrome.go b/test/cmd/chrome.go
new file mode 100644
index 00000000..82b38fcc
--- /dev/null
+++ b/test/cmd/chrome.go
@@ -0,0 +1,23 @@
+package main
+
+import (
+	"context"
+
+	"github.com/thecodingmachine/gotenberg/internal/pkg/chrome"
+	"github.com/thecodingmachine/gotenberg/internal/pkg/conf"
+	"github.com/thecodingmachine/gotenberg/internal/pkg/xlog"
+)
+
+func main() {
+	const op string = "main"
+	config, err := conf.FromEnv()
+	systemLogger := xlog.New(config.LogLevel(), "system")
+	if err != nil {
+		systemLogger.FatalOp(op, err)
+	}
+	// start Google Chrome.
+	_, err = chrome.Start(context.Background(), systemLogger)
+	if err != nil {
+		systemLogger.FatalOp(op, err)
+	}
+}