UNTESTED: Replace sigstore/rekor/pkg/client with a manually-created c…

…lient

This removes 4.728 MB from a macOS Skopeo binary.

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

go.mod

@@ -12,8 +12,6 @@ require (
 	github.com/docker/docker v23.0.1+incompatible
 	github.com/docker/docker-credential-helpers v0.7.0
 	github.com/docker/go-connections v0.4.0
-	github.com/go-openapi/strfmt v0.21.3
-	github.com/go-openapi/swag v0.22.3
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/hashicorp/go-retryablehttp v0.7.2
 	github.com/imdario/mergo v0.3.13
@@ -26,7 +24,6 @@ require (
 	github.com/ostreedev/ostree-go v0.0.0-20210805093236-719684c64e4f
 	github.com/proglottis/gpgme v0.1.3
 	github.com/sigstore/fulcio v1.0.0
-	github.com/sigstore/rekor v1.0.1
 	github.com/sigstore/sigstore v1.5.1
 	github.com/sirupsen/logrus v1.9.0
 	github.com/stretchr/testify v1.8.1
@@ -51,7 +48,6 @@ require (
 	github.com/Microsoft/hcsshim v0.9.6 // indirect
 	github.com/VividCortex/ewma v1.2.0 // indirect
 	github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d // indirect
-	github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d // indirect
 	github.com/chzyer/readline v1.5.1 // indirect
 	github.com/containerd/cgroups v1.0.4 // indirect
 	github.com/containerd/stargz-snapshotter/estargz v0.13.0 // indirect
@@ -60,50 +56,33 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/go-jose/go-jose/v3 v3.0.0 // indirect
-	github.com/go-logr/logr v1.2.3 // indirect
-	github.com/go-openapi/analysis v0.21.4 // indirect
-	github.com/go-openapi/errors v0.20.3 // indirect
-	github.com/go-openapi/jsonpointer v0.19.5 // indirect
-	github.com/go-openapi/jsonreference v0.20.0 // indirect
-	github.com/go-openapi/loads v0.21.2 // indirect
-	github.com/go-openapi/runtime v0.24.1 // indirect
-	github.com/go-openapi/spec v0.20.7 // indirect
-	github.com/go-openapi/validate v0.22.0 // indirect
-	github.com/go-playground/locales v0.14.0 // indirect
-	github.com/go-playground/universal-translator v0.18.0 // indirect
-	github.com/go-playground/validator/v10 v10.11.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/go-containerregistry v0.12.1 // indirect
 	github.com/google/go-intervals v0.0.2 // indirect
-	github.com/google/trillian v1.5.1-0.20220819043421-0a389c4bb8d9 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
-	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/kr/pretty v0.3.0 // indirect
 	github.com/letsencrypt/boulder v0.0.0-20230213213521-fdfea0d469b6 // indirect
-	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-runewidth v0.0.14 // indirect
 	github.com/mattn/go-shellwords v1.0.12 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/miekg/pkcs11 v1.1.1 // indirect
 	github.com/mistifyio/go-zfs/v3 v3.0.0 // indirect
-	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/moby/sys/mountinfo v0.6.2 // indirect
 	github.com/moby/term v0.0.0-20221120202655-abb19827d345 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/oklog/ulid v1.3.1 // indirect
 	github.com/opencontainers/runc v1.1.4 // indirect
 	github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417 // indirect
-	github.com/opentracing/opentracing-go v1.2.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rivo/uniseg v0.4.3 // indirect
+	github.com/rogpeppe/go-internal v1.8.0 // indirect
 	github.com/segmentio/ksuid v1.0.4 // indirect
 	github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966 // indirect
 	github.com/stefanberger/go-pkcs11uri v0.0.0-20201008174630-78d3cae3a980 // indirect
@@ -112,7 +91,6 @@ require (
 	github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
-	go.mongodb.org/mongo-driver v1.11.1 // indirect
 	go.mozilla.org/pkcs7 v0.0.0-20210826202110-33d05740a352 // indirect
 	go.opencensus.io v0.24.0 // indirect
 	golang.org/x/mod v0.7.0 // indirect
@@ -126,7 +104,5 @@ require (
 	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/go-jose/go-jose.v2 v2.6.1 // indirect
 	gopkg.in/square/go-jose.v2 v2.6.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gotest.tools/v3 v3.4.0 // indirect
-	k8s.io/klog/v2 v2.80.1 // indirect
 )