Update docker/dockerfile Docker tag to v1.19 (#4016)

renovate[bot] · web-flow · commit a3e9a4d746b7 · 2025-10-06T13:02:33.000+01:00
| datasource | package           | from | to   |
| ---------- | ----------------- | ---- | ---- |
| docker     | docker/dockerfile | 1.18 | 1.19 |

Signed-off-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/build/ubi/Dockerfile b/build/ubi/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.18
+# syntax=docker/dockerfile:1.19
 FROM golang:1.25 AS builder
 
 WORKDIR /go/src/github.com/nginx/nginx-gateway-fabric
diff --git a/build/ubi/Dockerfile.nginx b/build/ubi/Dockerfile.nginx
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.18
+# syntax=docker/dockerfile:1.19
 FROM scratch AS nginx-files
 
 # Repository and key files for UBI-based builds
diff --git a/build/ubi/Dockerfile.nginxplus b/build/ubi/Dockerfile.nginxplus
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.18
+# syntax=docker/dockerfile:1.19
 FROM scratch AS nginx-files
 
 # NGINX Plus repo and key files (must be provided at build time)

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# syntax=docker/dockerfile:1.18`
	`1`	`+# syntax=docker/dockerfile:1.19`
`2`	`2`	`FROM golang:1.25 AS builder`
`3`	`3`
`4`	`4`	`WORKDIR /go/src/github.com/nginx/nginx-gateway-fabric`