diff --git a/Jenkinsfile b/Jenkinsfile
index 5597efc..4962c2b 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -87,29 +87,15 @@ pipeline {
                       : > "\$log_file"
                       "\$@" >"\$log_file" 2>&1 &
                       cmd_pid=\$!
-                      last_line=0
                       cmd_status=0
+                      tail --pid="\$cmd_pid" -n +1 -f "\$log_file" &
+                      tail_pid=\$!
                       while kill -0 "\$cmd_pid" >/dev/null 2>&1; do
-                        if [ -f "\$log_file" ]; then
-                          total_lines=\$(wc -l < "\$log_file" || echo 0)
-                        else
-                          total_lines=0
-                        fi
-                        if [ "\$total_lines" -gt "\$last_line" ]; then
-                          sed -n "\$((last_line + 1)),\${total_lines}p" "\$log_file"
-                          last_line=\$total_lines
-                        else
-                          echo "[heartbeat] API multi-arch build still running at \$(date -u +%Y-%m-%dT%H:%M:%SZ)"
-                        fi
+                        echo "[heartbeat] API multi-arch build still running at \$(date -u +%Y-%m-%dT%H:%M:%SZ)"
                         sleep 20
                       done
                       wait "\$cmd_pid" || cmd_status=\$?
-                      if [ -f "\$log_file" ]; then
-                        total_lines=\$(wc -l < "\$log_file" || echo 0)
-                        if [ "\$total_lines" -gt "\$last_line" ]; then
-                          sed -n "\$((last_line + 1)),\${total_lines}p" "\$log_file"
-                        fi
-                      fi
+                      wait "\$tail_pid" >/dev/null 2>&1 || true
                       if [ "\$cmd_status" -ne 0 ]; then
                         echo "[heartbeat] API multi-arch build failed with exit code \$cmd_status"
                       fi
@@ -163,29 +149,15 @@ pipeline {
                       : > "\$log_file"
                       "\$@" >"\$log_file" 2>&1 &
                       cmd_pid=\$!
-                      last_line=0
                       cmd_status=0
+                      tail --pid="\$cmd_pid" -n +1 -f "\$log_file" &
+                      tail_pid=\$!
                       while kill -0 "\$cmd_pid" >/dev/null 2>&1; do
-                        if [ -f "\$log_file" ]; then
-                          total_lines=\$(wc -l < "\$log_file" || echo 0)
-                        else
-                          total_lines=0
-                        fi
-                        if [ "\$total_lines" -gt "\$last_line" ]; then
-                          sed -n "\$((last_line + 1)),\${total_lines}p" "\$log_file"
-                          last_line=\$total_lines
-                        else
-                          echo "[heartbeat] Web multi-arch build still running at \$(date -u +%Y-%m-%dT%H:%M:%SZ)"
-                        fi
+                        echo "[heartbeat] Web multi-arch build still running at \$(date -u +%Y-%m-%dT%H:%M:%SZ)"
                         sleep 20
                       done
                       wait "\$cmd_pid" || cmd_status=\$?
-                      if [ -f "\$log_file" ]; then
-                        total_lines=\$(wc -l < "\$log_file" || echo 0)
-                        if [ "\$total_lines" -gt "\$last_line" ]; then
-                          sed -n "\$((last_line + 1)),\${total_lines}p" "\$log_file"
-                        fi
-                      fi
+                      wait "\$tail_pid" >/dev/null 2>&1 || true
                       if [ "\$cmd_status" -ne 0 ]; then
                         echo "[heartbeat] Web multi-arch build failed with exit code \$cmd_status"
                       fi