Bump buildkit to v0.9.0-rc1

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

go.mod

@@ -5,20 +5,28 @@ go 1.16
 require (
 	cuelang.org/go v0.4.0
 	filippo.io/age v1.0.0-rc.3
+	github.com/Azure/azure-sdk-for-go v42.3.0+incompatible // indirect
+	github.com/Azure/go-autorest/autorest/azure/auth v0.4.2 // indirect
 	github.com/KromDaniel/jonson v0.0.0-20180630143114-d2f9c3c389db
 	github.com/containerd/console v1.0.2
 	github.com/docker/distribution v2.7.1+incompatible
+	github.com/docker/libnetwork v0.8.0-dev.2.0.20200917202933-d0951081b35f // indirect
 	github.com/emicklei/proto v1.9.0 // indirect
+	github.com/fatih/color v1.9.0 // indirect
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510
+	github.com/hashicorp/go-retryablehttp v0.6.6 // indirect
 	github.com/hashicorp/go-version v1.3.0
 	github.com/jaguilar/vt100 v0.0.0-20150826170717-2703a27b14ea
+	github.com/kr/text v0.2.0 // indirect
 	github.com/mattn/go-colorable v0.1.8 // indirect
 	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db
 	github.com/mitchellh/go-homedir v1.1.0
-	github.com/moby/buildkit v0.8.3
+	github.com/moby/buildkit v0.9.0-rc1
 	github.com/morikuni/aec v1.0.0
+	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/rs/zerolog v1.23.0
+	github.com/smartystreets/assertions v1.0.0 // indirect
 	github.com/spf13/cobra v1.2.1
 	github.com/spf13/viper v1.8.1
 	github.com/stretchr/testify v1.7.0
@@ -34,6 +42,7 @@ require (
 	golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1
 	golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e
 	google.golang.org/grpc v1.39.0
+	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )
 

util/buildkitd/buildkitd.go

@@ -16,7 +16,7 @@ import (
 
 const (
 	image         = "moby/buildkit"
-	version       = "v0.8.3"
+	version       = "v0.9.0-rc1"
 	imageVersion  = image + ":" + version
 	containerName = "dagger-buildkitd"
 	volumeName    = "dagger-buildkitd"