pass directory to the buildpack downloader directly

Co-authored-by: Pavel Busko <pavel.busko@sap.com>

go.mod

@@ -6,10 +6,10 @@ require (
 	github.com/BurntSushi/toml v1.4.0
 	github.com/apex/log v1.9.0
 	github.com/buildpacks/lifecycle v0.19.7
-	github.com/buildpacks/pack v0.34.2
+	github.com/buildpacks/pack v0.35.0
 	github.com/cespare/xxhash/v2 v2.3.0
 	github.com/docker/docker v27.0.3+incompatible
-	github.com/google/go-containerregistry v0.19.2
+	github.com/google/go-containerregistry v0.20.0
 	github.com/jarcoal/httpmock v1.3.1
 	github.com/onsi/ginkgo/v2 v2.19.0
 	github.com/onsi/gomega v1.33.1
@@ -61,7 +61,7 @@ require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/dimchansky/utfbom v1.1.1 // indirect
 	github.com/distribution/reference v0.6.0 // indirect
-	github.com/docker/cli v26.1.3+incompatible // indirect
+	github.com/docker/cli v26.1.4+incompatible // indirect
 	github.com/docker/distribution v2.8.3+incompatible // indirect
 	github.com/docker/docker-credential-helpers v0.8.1 // indirect
 	github.com/docker/go-connections v0.5.0 // indirect
@@ -117,13 +117,13 @@ require (
 	go.opentelemetry.io/otel v1.25.0 // indirect
 	go.opentelemetry.io/otel/metric v1.25.0 // indirect
 	go.opentelemetry.io/otel/trace v1.25.0 // indirect
-	golang.org/x/crypto v0.23.0 // indirect
+	golang.org/x/crypto v0.25.0 // indirect
 	golang.org/x/net v0.25.0 // indirect
 	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/sys v0.20.0 // indirect
-	golang.org/x/term v0.20.0 // indirect
-	golang.org/x/text v0.15.0 // indirect
-	golang.org/x/tools v0.21.0 // indirect
+	golang.org/x/sys v0.22.0 // indirect
+	golang.org/x/term v0.22.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
+	golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240429193739-8cf5692501f6 // indirect
 	google.golang.org/grpc v1.63.2 // indirect
 	google.golang.org/protobuf v1.34.1 // indirect

go.sum

@@ -31,6 +31,8 @@ github.com/Azure/go-autorest/tracing v0.6.0 h1:TYi4+3m5t6K48TGI9AUdb+IzbnSxvnvUM
 github.com/Azure/go-autorest/tracing v0.6.0/go.mod h1:+vhtPC754Xsa23ID7GlGsrdKBpUA79WCAKPPZVC2DeU=
 github.com/BurntSushi/toml v1.4.0 h1:kuoIxZQy2WRRk1pttg9asf+WVv6tWQuBNVmK8+nqPr0=
 github.com/BurntSushi/toml v1.4.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
+github.com/GoogleContainerTools/kaniko v1.23.0 h1:/YTWOF3uL40kNyK2821Wc+12Czlon1U+gmISWw9CLTM=
+github.com/GoogleContainerTools/kaniko v1.23.0/go.mod h1:lTA7EDyPzSGYxcXxaxWCztINdHMb1Qxj6+eAn1vo2EI=
 github.com/Masterminds/semver v1.5.0 h1:H65muMkzWKEuNDnfl9d70GUjFniHKHRbFPGBuZ3QEww=
 github.com/Masterminds/semver v1.5.0/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
 github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
@@ -90,8 +92,8 @@ github.com/buildpacks/imgutil v0.0.0-20240605145725-186f89b2d168 h1:yVYVi1V7x1bX
 github.com/buildpacks/imgutil v0.0.0-20240605145725-186f89b2d168/go.mod h1:n2R6VRuWsAX3cyHCp/u0Z4WJcixny0gYg075J39owrk=
 github.com/buildpacks/lifecycle v0.19.7 h1:q9a96xDGC7mhzJ5h+Esrg7q8PSYgL5XmBiBnSRNLalw=
 github.com/buildpacks/lifecycle v0.19.7/go.mod h1:OJ8JCdBSbzeY45l5l3YuGbcPAOKYUv1GUaKP2uDeUS0=
-github.com/buildpacks/pack v0.34.2 h1:6+BvuYeS07QUJZAkb/L9v2TI7mtLA2zzbfewfB4bRT8=
-github.com/buildpacks/pack v0.34.2/go.mod h1:g1o7cohzXn2X+uYdWKdFgity1l2QvUDSGIMVhzBbA1M=
+github.com/buildpacks/pack v0.35.0 h1:cgIZ5T1fKVBOAb3CtHJAMlRb3/OYez3fIIyqmComVhY=
+github.com/buildpacks/pack v0.35.0/go.mod h1:ttb2Qmr1u7LKnhZNZJLCE/WQUXTtZoo+mJ4welgxS5c=
 github.com/cenkalti/backoff/v4 v4.2.1 h1:y4OZtCnogmCPw98Zjyt5a6+QwPLGkiQsYW5oUqylYbM=
 github.com/cenkalti/backoff/v4 v4.2.1/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
@@ -126,8 +128,8 @@ github.com/dimchansky/utfbom v1.1.1 h1:vV6w1AhK4VMnhBno/TPVCoK9U/LP0PkLCS9tbxHdi
 github.com/dimchansky/utfbom v1.1.1/go.mod h1:SxdoEBH5qIqFocHMyGOXVAybYJdr71b1Q/j0mACtrfE=
 github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5QvfrDyIgxBk=
 github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
-github.com/docker/cli v26.1.3+incompatible h1:bUpXT/N0kDE3VUHI2r5VMsYQgi38kYuoC0oL9yt3lqc=
-github.com/docker/cli v26.1.3+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
+github.com/docker/cli v26.1.4+incompatible h1:I8PHdc0MtxEADqYJZvhBrW9bo8gawKwwenxRM7/rLu8=
+github.com/docker/cli v26.1.4+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
 github.com/docker/distribution v2.8.3+incompatible h1:AtKxIZ36LoNK51+Z6RpzLpddBirtxJnzDrHLEKxTAYk=
 github.com/docker/distribution v2.8.3+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
 github.com/docker/docker v27.0.3+incompatible h1:aBGI9TeQ4MPlhquTQKq9XbK79rKFVwXNUAYz9aXyEBE=
@@ -194,8 +196,8 @@ github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/google/go-containerregistry v0.19.2 h1:TannFKE1QSajsP6hPWb5oJNgKe1IKjHukIKDUmvsV6w=
-github.com/google/go-containerregistry v0.19.2/go.mod h1:YCMFNQeeXeLF+dnhhWkqDItx/JSkH01j1Kis4PsjzFI=
+github.com/google/go-containerregistry v0.20.0 h1:wRqHpOeVh3DnenOrPy9xDOLdnLatiGuuNRVelR2gSbg=
+github.com/google/go-containerregistry v0.20.0/go.mod h1:YCMFNQeeXeLF+dnhhWkqDItx/JSkH01j1Kis4PsjzFI=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/pprof v0.0.0-20240424215950-a892ee059fd6 h1:k7nVchz72niMH6YLQNvHSdIE7iqsQxK1P41mySCvssg=
 github.com/google/pprof v0.0.0-20240424215950-a892ee059fd6/go.mod h1:kf6iHlnVGwgKolg33glAes7Yg/8iWP8ukqeldJSO7jw=
@@ -266,8 +268,8 @@ github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/ioprogress v0.0.0-20180201004757-6a23b12fa88e h1:Qa6dnn8DlasdXRnacluu8HzPts0S1I9zvvUPDbBnXFI=
 github.com/mitchellh/ioprogress v0.0.0-20180201004757-6a23b12fa88e/go.mod h1:waEya8ee1Ro/lgxpVhkJI4BVASzkm3UZqkx/cFJiYHM=
-github.com/mitchellh/mapstructure v1.4.1 h1:CpVNEelQCZBooIPDn+AR3NpivK/TIKU8bDxdASFVQag=
-github.com/mitchellh/mapstructure v1.4.1/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
+github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/moby/buildkit v0.13.2 h1:nXNszM4qD9E7QtG7bFWPnDI1teUQFQglBzon/IU3SzI=
 github.com/moby/buildkit v0.13.2/go.mod h1:2cyVOv9NoHM7arphK9ZfHIWKn9YVZRFd1wXB8kKmEzY=
 github.com/moby/docker-image-spec v1.3.1 h1:jMKff3w6PgbfSa69GfNg+zN/XLhfXJGnEx3Nl2EsFP0=
@@ -430,13 +432,13 @@ golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5y
 golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.6.0/go.mod h1:OFC/31mSvZgRz0V1QTNCzfAI1aIRzbiufJtkMIlEp58=
-golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI=
-golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
+golang.org/x/crypto v0.25.0 h1:ypSNr+bnYL2YhwoMt2zPxHFmbAN1KZs/njMG3hxUp30=
+golang.org/x/crypto v0.25.0/go.mod h1:T+wALwcMOSE0kXgUAnPAHqTLW+XHgcELELW8VaDgm/M=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/mod v0.17.0 h1:zY54UmvipHiNd+pm+m0x9KhZ9hl1/7QNMyxXbc6ICqA=
-golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/mod v0.19.0 h1:fEdghXQSo20giMthA7cd28ZC+jts4amQ3YMXiP5oMQ8=
+golang.org/x/mod v0.19.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
@@ -482,30 +484,30 @@ golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
+golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
-golang.org/x/term v0.20.0 h1:VnkxpohqXaOBYJtBmEppKUG6mXpi+4O6purfc2+sMhw=
-golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
+golang.org/x/term v0.22.0 h1:BbsgPEJULsl2fV/AT3v15Mjva5yXKQDyKf+TbDz7QJk=
+golang.org/x/term v0.22.0/go.mod h1:F3qCibpT5AMpCRfhfT53vVJwhLtIVHhB9XDjfFvnMI4=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
-golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
+golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
 golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
 golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.21.0 h1:qc0xYgIbsSDt9EyWz05J5wfa7LOVW0YTLOXrqdLAWIw=
-golang.org/x/tools v0.21.0/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
+golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d h1:vU5i/LfpvrRCpgM/VPfJLg5KjxD3E+hfT1SH+d9zLwg=
+golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

integration/lifecycle_test.go

@@ -27,6 +27,7 @@ var _ = Describe("Lifecycle", func() {
 
 	BeforeEach(func() {
 		cacheDir = GinkgoT().TempDir()
+		Expect(err).ToNot(HaveOccurred())
 		req := testcontainers.ContainerRequest{
 			Image:         "ubuntu:noble",
 			ImagePlatform: "linux/amd64",
@@ -59,7 +60,7 @@ var _ = Describe("Lifecycle", func() {
 							return err
 						},
 						func(ctx context.Context, container testcontainers.Container) error {
-							code, _, err := container.Exec(ctx, []string{"apt", "install", "ca-certificates", "-y"})
+							code, _, err := container.Exec(ctx, []string{"apt", "install", "ca-certificates", "skopeo", "-y"})
 							if code != 0 {
 								return fmt.Errorf("failed to run install ca-certificates, RC: %d", code)
 							}
@@ -75,13 +76,37 @@ var _ = Describe("Lifecycle", func() {
 								return err
 							}
 
-							if err := container.CopyDirToContainer(ctx, "workspace", "/home/ubuntu/", 0o755); err != nil {
+							if err := container.CopyDirToContainer(ctx, "./testdata/workspace", "/home/ubuntu/", 0o755); err != nil {
 								return err
 							}
 
 							code, _, err := container.Exec(ctx, []string{"chown", "-R", "ubuntu:ubuntu", "/home/ubuntu/workspace"})
 							if code != 0 {
-								return fmt.Errorf("failed to run run chown, RC: %d", code)
+								return fmt.Errorf("failed to run chown, RC: %d", code)
+							}
+							if err != nil {
+								return err
+							}
+
+							code, _, err = container.Exec(ctx, []string{"mkdir", "-p", "/tmp/buildpacks"})
+							if code != 0 {
+								return fmt.Errorf("failed to run mkdir, RC: %d", code)
+							}
+							if err != nil {
+								return err
+							}
+
+							code, _, err = container.Exec(ctx, []string{"skopeo", "copy", "docker://gcr.io/paketo-buildpacks/java:latest", "oci:/tmp/buildpacks/10bfa3ba0b8af13e"})
+							if code != 0 {
+								return fmt.Errorf("failed to run skopeo, RC: %d", code)
+							}
+							if err != nil {
+								return err
+							}
+
+							code, _, err = container.Exec(ctx, []string{"chown", "-R", "ubuntu:ubuntu", "/tmp/buildpacks"})
+							if code != 0 {
+								return fmt.Errorf("failed to run chown, RC: %d", code)
 							}
 
 							return err
@@ -97,7 +122,54 @@ var _ = Describe("Lifecycle", func() {
 		Expect(err).To(BeNil())
 	})
 
-	It("should succeed", func() {
+	It("should build an app using system buildpacks", func() {
+		code, out, err := testContainer.Exec(context.Background(), []string{
+			"/tmp/builder",
+			"-b", "gcr.io/paketo-buildpacks/java",
+			"-r", "/tmp/build-result.json",
+			"-d", "/tmp/droplet.tgz",
+			"-l", "/home/ubuntu/layers",
+			"-w", "/home/ubuntu/workspace",
+			"--pass-env-var", "BP_JVM_VERSION",
+		}, exec.WithUser("ubuntu"))
+		Expect(err).To(BeNil())
+
+		buf := bytes.NewBufferString("")
+		_, err = io.Copy(buf, out)
+		Expect(err).To(BeNil())
+		outString := buf.String()
+		Expect(outString).To(ContainSubstring("Downloading buildpack from URI: file://"))
+		Expect(outString).To(ContainSubstring("Run image info in analyzed metadata is"))
+		Expect(outString).To(ContainSubstring("Checking for match against descriptor"))
+		Expect(outString).To(ContainSubstring("Finished running build"))
+		Expect(outString).To(ContainSubstring("Copying SBOM files"))
+		Expect(outString).To(ContainSubstring("Listing processes"))
+		Expect(outString).To(ContainSubstring("Builder ran for"))
+		Expect(outString).To(ContainSubstring("result file saved to"))
+		Expect(outString).To(ContainSubstring("droplet archive saved to"))
+
+		Expect(code).To(Equal(0))
+
+		r, err := testContainer.CopyFileFromContainer(context.Background(), "/tmp/build-result.json")
+		Expect(err).To(BeNil())
+		defer r.Close()
+
+		resultBuf := bytes.NewBuffer(nil)
+		_, err = io.Copy(resultBuf, r)
+		Expect(err).To(BeNil())
+
+		result := staging.StagingResult{}
+		Expect(json.Unmarshal(resultBuf.Bytes(), &result)).To(Succeed())
+		Expect(result.LifecycleType).To(Equal("cnb"))
+		Expect(result.ProcessTypes).To(Equal(staging.ProcessTypes{
+			"executable-jar": "java org.springframework.boot.loader.JarLauncher",
+			"task":           "java org.springframework.boot.loader.JarLauncher",
+			"web":            "java org.springframework.boot.loader.JarLauncher",
+		}))
+		Expect(result.Buildpacks).To(HaveLen(10))
+	})
+
+	It("build an app using custom buildpacks", func() {
 		By("building the app", func() {
 			code, out, err := testContainer.Exec(context.Background(), []string{
 				"/tmp/builder",
@@ -163,7 +235,7 @@ var _ = Describe("Lifecycle", func() {
 			Expect(code).To(Equal(0))
 			Expect(err).To(BeNil())
 
-			Expect(testContainer.CopyDirToContainer(context.Background(), "workspace", "/home/ubuntu/", 0o755)).To(Succeed())
+			Expect(testContainer.CopyDirToContainer(context.Background(), "testdata/workspace", "/home/ubuntu/", 0o755)).To(Succeed())
 			code, _, err = testContainer.Exec(context.Background(), []string{"chown", "-R", "ubuntu:ubuntu", "/home/ubuntu/workspace"})
 			Expect(code).To(Equal(0))
 			Expect(err).To(BeNil())

pkg/buildpacks/translate.go

@@ -1,14 +1,11 @@
 package buildpacks
 
 import (
-	"archive/tar"
-	"compress/gzip"
 	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
 
-	"code.cloudfoundry.org/cnbapplifecycle/pkg/archive"
 	"code.cloudfoundry.org/cnbapplifecycle/pkg/log"
 	"github.com/cespare/xxhash/v2"
 )
@@ -24,12 +21,7 @@ func Translate(bps []string, buildpacksDir string, logger *log.Logger) ([]string
 		}
 
 		if downloaded {
-			newPath, err := createArchive(bpDir)
-			if err != nil {
-				return nil, err
-			}
-
-			newList = append(newList, newPath)
+			newList = append(newList, fmt.Sprintf("file://%s", bpDir))
 		} else {
 			newList = append(newList, bp)
 		}
@@ -59,18 +51,3 @@ func checkIfDownloaded(path string) (bool, error) {
 func buildpackPath(name string, path string) string {
 	return filepath.Join(path, fmt.Sprintf("%016x", xxhash.Sum64String(name)))
 }
-
-func createArchive(path string) (string, error) {
-	newPath := fmt.Sprintf("%s.tgz", path)
-
-	f, err := os.OpenFile(newPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0o644)
-	if err != nil {
-		return "", err
-	}
-	defer f.Close()
-
-	bgw := gzip.NewWriter(f)
-	defer bgw.Close()
-
-	return fmt.Sprintf("file://%s", newPath), archive.FromDirectory(path, tar.NewWriter(bgw))
-}

pkg/buildpacks/translate_test.go

@@ -37,10 +37,10 @@ var _ = Describe("Translate", func() {
 		bps, err = buildpacks.Translate(bps, bpDir, logger)
 		Expect(err).NotTo(HaveOccurred())
 		Expect(bps).To(Equal([]string{
-			fmt.Sprintf("file://%s.tgz", filepath.Join(bpDir, hashedName)),
+			fmt.Sprintf("file://%s", filepath.Join(bpDir, hashedName)),
 			"bar",
 		}))
-		Expect(fmt.Sprintf("%s.tgz", filepath.Join(bpDir, hashedName))).To(BeARegularFile())
+		Expect(filepath.Join(bpDir, hashedName)).To(BeADirectory())
 	})
 
 	When("when hashed path is not a directory", func() {