Update docker/dockerfile Docker tag to v1.21

renovate[bot] · web-flow · commit 63c46a6bcda9 · 2026-01-22T17:06:04.000Z
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-# syntax = docker/dockerfile:1.20
+# syntax = docker/dockerfile:1.21
 
 FROM scratch AS backend-source
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# syntax = docker/dockerfile:1.20`
	`1`	`+# syntax = docker/dockerfile:1.21`
`2`	`2`
`3`	`3`	`FROM scratch AS backend-source`
`4`	`4`