chore: revert multi-registry support (#311)

Author: xoxys

_docs/content/_index.md

@@ -95,29 +95,6 @@ steps:
       tags: latest
 ```
 
-#### Push to multiple registries
-
-```yaml
-kind: pipeline
-name: default
-
-steps:
-  - name: docker
-    image: thegeeklab/drone-docker-buildx:23
-    privileged: true
-    settings:
-      repo:
-        - octocat/example
-        - ghcr.io/octocat/example
-      tags: latest
-      registries:
-        - username: octocat
-          password: docker-password
-        - registry: ghcr.io
-          username: octocat
-          password: ghrc-password
-```
-
 ## Build
 
 Build the binary with the following command:

_docs/data/data.yaml

@@ -208,7 +208,7 @@ properties:
     description: |
       Repository name for the image. If the image is to be pushed to registries other than the default DockerHub,
       it is necessary to set `repo` as fully-qualified name.
-    type: list
+    type: string
     required: false
 
   - name: registry
@@ -293,8 +293,3 @@ properties:
       This should be used with caution and avoided whenever possible.
     type: list
     required: false
-
-  - name: registries
-    description: List of registry credentials. Check out the Examples for more information.
-    type: list
-    required: false

cmd/drone-docker-buildx/config.go

@@ -235,7 +235,7 @@ func settingsFlags(settings *plugin.Settings, category string) []cli.Flag {
 			Destination: &settings.Build.Compress,
 			Category:    category,
 		},
-		&cli.StringSliceFlag{
+		&cli.StringFlag{
 			Name:        "repo",
 			EnvVars:     []string{"PLUGIN_REPO"},
 			Usage:       "repository name for the image",
@@ -246,7 +246,7 @@ func settingsFlags(settings *plugin.Settings, category string) []cli.Flag {
 			Name:        "docker.registry",
 			EnvVars:     []string{"PLUGIN_REGISTRY", "DOCKER_REGISTRY"},
 			Usage:       "docker registry to authenticate with",
-			Value:       plugin.DefaultRegistry,
+			Value:       "https://index.docker.io/v1/",
 			Destination: &settings.Login.Registry,
 			Category:    category,
 		},
@@ -328,13 +328,5 @@ func settingsFlags(settings *plugin.Settings, category string) []cli.Flag {
 			Value:    &drone.StringSliceFlag{},
 			Category: category,
 		},
-		&cli.StringFlag{
-			Name:        "docker.registries",
-			EnvVars:     []string{"PLUGIN_REGISTRIES"},
-			Usage:       "credentials for registries",
-			Value:       "[]",
-			Destination: &settings.Login.RegistriesRaw,
-			Category:    category,
-		},
 	}
 }

go.mod

@@ -6,20 +6,13 @@ require (
 	github.com/coreos/go-semver v0.3.1
 	github.com/joho/godotenv v1.5.1
 	github.com/sirupsen/logrus v1.9.3
-	github.com/stretchr/testify v1.7.0
 	github.com/thegeeklab/drone-plugin-lib/v2 v2.3.4
 	github.com/urfave/cli/v2 v2.25.5
 	golang.org/x/sys v0.11.0
 )
 
-require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-)
-
 require (
 	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -25,7 +25,6 @@ github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsr
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
 golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

plugin/docker.go

@@ -11,7 +11,7 @@ import (
 )
 
 // helper function to create the docker login command.
-func commandLogin(login RegistryData) *execabs.Cmd {
+func commandLogin(login Login) *execabs.Cmd {
 	if login.Email != "" {
 		return commandLoginEmail(login)
 	}
@@ -28,7 +28,7 @@ func commandLogin(login RegistryData) *execabs.Cmd {
 	)
 }
 
-func commandLoginEmail(login RegistryData) *execabs.Cmd {
+func commandLoginEmail(login Login) *execabs.Cmd {
 	args := []string{
 		"login",
 		"-u", login.Username,
@@ -140,10 +140,8 @@ func commandBuild(build Build, dryrun bool) *execabs.Cmd {
 		args = append(args, "--platform", strings.Join(build.Platforms.Value(), ","))
 	}
 
-	for _, repo := range build.Repo.Value() {
-		for _, arg := range build.Tags.Value() {
-			args = append(args, "-t", fmt.Sprintf("%s:%s", repo, arg))
-		}
+	for _, arg := range build.Tags.Value() {
+		args = append(args, "-t", fmt.Sprintf("%s:%s", build.Repo, arg))
 	}
 
 	for _, arg := range build.ExtraTags.Value() {

plugin/impl.go

@@ -1,7 +1,6 @@
 package plugin
 
 import (
-	"encoding/json"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -32,17 +31,11 @@ type Daemon struct {
 
 // Login defines Docker login parameters.
 type Login struct {
-	RegistryData
-	Config        string
-	Registries    []RegistryData
-	RegistriesRaw string
-}
-
-type RegistryData struct {
 	Registry string // Docker registry address
 	Username string // Docker registry username
 	Password string // Docker registry password
 	Email    string // Docker registry email
+	Config   string // Docker Auth Config
 }
 
 // Build defines Docker build parameters.
@@ -63,7 +56,7 @@ type Build struct {
 	CacheFrom    []string        // Docker build cache-from
 	CacheTo      string          // Docker build cache-to
 	Compress     bool            // Docker build compress
-	Repo         cli.StringSlice // Docker build repositories
+	Repo         string          // Docker build repository
 	NoCache      bool            // Docker build no-cache
 	AddHost      cli.StringSlice // Docker build add-host
 	Quiet        bool            // Docker build quiet
@@ -83,10 +76,7 @@ type Settings struct {
 	Dryrun bool
 }
 
-const (
-	strictFilePerm  = 0o600
-	DefaultRegistry = "https://index.docker.io/v1/"
-)
+const strictFilePerm = 0o600
 
 // Validate handles the settings validation of the plugin.
 func (p *Plugin) Validate() error {
@@ -118,16 +108,6 @@ func (p *Plugin) Validate() error {
 		}
 	}
 
-	if err := json.Unmarshal([]byte(p.settings.Login.RegistriesRaw), &p.settings.Login.Registries); err != nil {
-		return fmt.Errorf("error unmarshal registries: %w", err)
-	}
-
-	for i, registryData := range p.settings.Login.Registries {
-		if registryData.Registry == "" {
-			p.settings.Login.Registries[i].Registry = DefaultRegistry
-		}
-	}
-
 	return nil
 }
 
@@ -187,16 +167,7 @@ func (p *Plugin) Execute() error {
 
 	// login to the Docker registry
 	if p.settings.Login.Password != "" {
-		cmd := commandLogin(p.settings.Login.RegistryData)
-
-		err := cmd.Run()
-		if err != nil {
-			return fmt.Errorf("error authenticating: %w", err)
-		}
-	}
-
-	for _, registryData := range p.settings.Login.Registries {
-		cmd := commandLogin(registryData)
+		cmd := commandLogin(p.settings.Login)
 
 		err := cmd.Run()
 		if err != nil {
@@ -214,8 +185,6 @@ func (p *Plugin) Execute() error {
 	switch {
 	case p.settings.Login.Password != "":
 		logrus.Info("Detected registry credentials")
-	case len(p.settings.Login.Registries) > 0:
-		logrus.Info("Detected multiple registry credentials")
 	case p.settings.Login.Config != "":
 		logrus.Info("Detected registry credentials file")
 	default: