build with --no-cache not work after v0.17.2

[owanio1992]

I got issue in BUILDKIT v0.17.2, builder is ignore --no-cache parameter

builder

$ docker buildx ls
NAME/NODE      DRIVER/ENDPOINT                   STATUS    BUILDKIT   PLATFORMS
v0.16.0        docker-container                                       
 \_ v0.16.00    \_ unix:///var/run/docker.sock   running   v0.16.0    linux/amd64, linux/amd64/v2, linux/amd64/v3, linux/amd64/v4, linux/386
v0.17.0        docker-container                                       
 \_ v0.17.00    \_ unix:///var/run/docker.sock   running   v0.17.0    linux/amd64, linux/amd64/v2, linux/amd64/v3, linux/amd64/v4, linux/386
v0.17.1        docker-container                                       
 \_ v0.17.10    \_ unix:///var/run/docker.sock   running   v0.17.1    linux/amd64, linux/amd64/v2, linux/amd64/v3, linux/amd64/v4, linux/386
v0.17.2        docker-container                                       
 \_ v0.17.20    \_ unix:///var/run/docker.sock   running   v0.17.2    linux/amd64, linux/amd64/v2, linux/amd64/v3, linux/amd64/v4, linux/386
v0.18.0        docker-container                                       
 \_ v0.18.00    \_ unix:///var/run/docker.sock   running   v0.18.0    linux/amd64, linux/amd64/v2, linux/amd64/v3, linux/amd64/v4, linux/386
default*       docker                                                 
 \_ default     \_ default                       running   v0.16.0    linux/amd64, linux/amd64/v2, linux/amd64/v3, linux/amd64/v4, linux/386

docker file

# syntax=docker/dockerfile:1

FROM ubuntu:24.04

RUN echo "543"

USER ubuntu

test command

when use BUILDKIT v0.16.0 ~ v0.17.1, --no-cache is work
RUN echo "543" is not CACHED

$ docker buildx build --builder v0.17.1 --no-cache .
[+] Building 1.1s (8/8) FINISHED                                                                                                                                                                                   docker-container:v0.17.1
 => [internal] load build definition from Dockerfile                                                                                                                                                                                   0.0s
 => => transferring dockerfile: 113B                                                                                                                                                                                                   0.0s
 => resolve image config for docker-image://docker.io/docker/dockerfile:1                                                                                                                                                              0.4s
 => CACHED docker-image://docker.io/docker/dockerfile:1@sha256:865e5dd094beca432e8c0a1d5e1c465db5f998dca4e439981029b3b81fb39ed5                                                                                                        0.0s
 => => resolve docker.io/docker/dockerfile:1@sha256:865e5dd094beca432e8c0a1d5e1c465db5f998dca4e439981029b3b81fb39ed5                                                                                                                   0.0s
 => [internal] load build definition from Dockerfile                                                                                                                                                                                   0.0s
 => [internal] load metadata for docker.io/library/ubuntu:24.04                                                                                                                                                                        0.5s
 => [internal] load .dockerignore                                                                                                                                                                                                      0.0s
 => => transferring context: 2B                                                                                                                                                                                                        0.0s
 => CACHED [1/2] FROM docker.io/library/ubuntu:24.04@sha256:278628f08d4979fb9af9ead44277dbc9c92c2465922310916ad0c46ec9999295                                                                                                           0.0s
 => => resolve docker.io/library/ubuntu:24.04@sha256:278628f08d4979fb9af9ead44277dbc9c92c2465922310916ad0c46ec9999295                                                                                                                  0.0s
 => [2/2] RUN echo "543"  

when use BUILDKIT v0.17.2, --no-cache is not work
echo "543" is CACHED

$ docker buildx build --builder v0.17.2 --no-cache .
[+] Building 3.7s (9/9) FINISHED                                                                                                                                                                                   docker-container:v0.17.2
 => [internal] load build definition from Dockerfile                                                                                                                                                                                   0.0s
 => => transferring dockerfile: 113B                                                                                                                                                                                                   0.0s
 => resolve image config for docker-image://docker.io/docker/dockerfile:1                                                                                                                                                              2.4s
 => [auth] docker/dockerfile:pull token for registry-1.docker.io                                                                                                                                                                       0.0s
 => CACHED docker-image://docker.io/docker/dockerfile:1@sha256:865e5dd094beca432e8c0a1d5e1c465db5f998dca4e439981029b3b81fb39ed5                                                                                                        0.0s
 => => resolve docker.io/docker/dockerfile:1@sha256:865e5dd094beca432e8c0a1d5e1c465db5f998dca4e439981029b3b81fb39ed5                                                                                                                   0.0s
 => [internal] load metadata for docker.io/library/ubuntu:24.04                                                                                                                                                                        1.2s
 => [auth] library/ubuntu:pull token for registry-1.docker.io                                                                                                                                                                          0.0s
 => local://context                                                                                                                                                                                                                    0.0s
 => => transferring context: 2B                                                                                                                                                                                                        0.0s
 => docker-image://docker.io/library/ubuntu:24.04@sha256:278628f08d4979fb9af9ead44277dbc9c92c2465922310916ad0c46ec9999295                                                                                                              0.0s
 => => resolve docker.io/library/ubuntu:24.04@sha256:278628f08d4979fb9af9ead44277dbc9c92c2465922310916ad0c46ec9999295                                                                                                                  0.0s
 => CACHED /bin/sh -c echo "543"   

same as v 0.18.0

$ docker buildx build --builder v0.18.0 --no-cache .
[+] Building 1.7s (7/7) FINISHED                                                                                                                                                                                   docker-container:v0.18.0
 => [internal] load build definition from Dockerfile                                                                                                                                                                                   0.0s
 => => transferring dockerfile: 113B                                                                                                                                                                                                   0.0s
 => resolve image config for docker-image://docker.io/docker/dockerfile:1                                                                                                                                                              1.0s
 => CACHED docker-image://docker.io/docker/dockerfile:1@sha256:865e5dd094beca432e8c0a1d5e1c465db5f998dca4e439981029b3b81fb39ed5                                                                                                        0.0s
 => => resolve docker.io/docker/dockerfile:1@sha256:865e5dd094beca432e8c0a1d5e1c465db5f998dca4e439981029b3b81fb39ed5                                                                                                                   0.0s
 => [internal] load metadata for docker.io/library/ubuntu:24.04                                                                                                                                                                        0.5s
 => local://context                                                                                                                                                                                                                    0.0s
 => => transferring context: 2B                                                                                                                                                                                                        0.0s
 => docker-image://docker.io/library/ubuntu:24.04@sha256:278628f08d4979fb9af9ead44277dbc9c92c2465922310916ad0c46ec9999295                                                                                                              0.0s
 => => resolve docker.io/library/ubuntu:24.04@sha256:278628f08d4979fb9af9ead44277dbc9c92c2465922310916ad0c46ec9999295                                                                                                                  0.0s
 => CACHED /bin/sh -c echo "543" 

[crazy-max]

Thanks for reporting, looks like #5517 introduced this regression (cc @jsternberg)