Update docker/dockerfile Docker tag to v1.18 (#8307)

renovate[bot] · web-flow · commit ae2d34438789 · 2025-09-29T15:46:42.000Z
| datasource | package           | from | to   |
| ---------- | ----------------- | ---- | ---- |
| docker     | docker/dockerfile | 1.16 | 1.18 |

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/Dockerfile b/build/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.16
+# syntax=docker/dockerfile:1.18
 ARG BUILD_OS=debian
 ARG NGINX_OSS_VERSION=1.29
 ARG NGINX_PLUS_VERSION=R35
diff --git a/build/dependencies/Dockerfile.ubi8 b/build/dependencies/Dockerfile.ubi8
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.16
+# syntax=docker/dockerfile:1.18
 FROM redhat/ubi8@sha256:534c2c0efa4150ede18e3f9d7480d3b9ec2a52e62bc91cd54e08ee7336819619 AS rpm-build
 RUN mkdir -p /rpms/ \
     && dnf install rpm-build gcc make cmake -y \
diff --git a/build/dependencies/Dockerfile.ubi9 b/build/dependencies/Dockerfile.ubi9
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.16
+# syntax=docker/dockerfile:1.18
 FROM redhat/ubi9:9.6@sha256:dbc1e98d14a022542e45b5f22e0206d3f86b5bdf237b58ee7170c9ddd1b3a283 AS rpm-build
 RUN mkdir -p /rpms/ \
     && dnf install rpm-build gcc make cmake -y \
diff --git a/tests/Dockerfile b/tests/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.16
+# syntax=docker/dockerfile:1.18
 FROM python:3.13-bookworm@sha256:f64a1db27d5d0fdcb48a54c553e67b0ec920c8a1ef0b627e87b8d3d73dc003fb
 
 RUN apt-get update \

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# syntax=docker/dockerfile:1.16`
	`1`	`+# syntax=docker/dockerfile:1.18`
`2`	`2`	`ARG BUILD_OS=debian`
`3`	`3`	`ARG NGINX_OSS_VERSION=1.29`
`4`	`4`	`ARG NGINX_PLUS_VERSION=R35`