Add snapshot mode support (#13)

.drone.yml

@@ -15,6 +15,7 @@ steps:
     repo: plugins/kaniko
     auto_tag: true
     auto_tag_suffix: linux-amd64
+    daemon_off: false
     dockerfile: docker/docker/Dockerfile.linux.amd64
     username:
       from_secret: docker_username
@@ -22,8 +23,8 @@ steps:
       from_secret: docker_password
   when:
     event:
-    - push
+      exclude:
-    - tag
+      - pull_request
 
 - name: gcr
   image: plugins/docker
@@ -31,6 +32,7 @@ steps:
     repo: plugins/kaniko-gcr
     auto_tag: true
     auto_tag_suffix: linux-amd64
+    daemon_off: false
     dockerfile: docker/gcr/Dockerfile.linux.amd64
     username:
       from_secret: docker_username
@@ -38,8 +40,8 @@ steps:
       from_secret: docker_password
   when:
     event:
-    - push
+      exclude:
-    - tag
+      - pull_request
 
 - name: ecr
   image: plugins/docker
@@ -47,6 +49,7 @@ steps:
     repo: plugins/kaniko-ecr
     auto_tag: true
     auto_tag_suffix: linux-amd64
+    daemon_off: false
     dockerfile: docker/ecr/Dockerfile.linux.amd64
     username:
       from_secret: docker_username
@@ -54,5 +57,5 @@ steps:
       from_secret: docker_password
   when:
     event:
-    - push
+      exclude:
-    - tag
+      - pull_request

README.md

@@ -49,5 +49,5 @@ docker run --rm \
     -e PLUGIN_PASSWORD=bar \
     -v $(pwd):/drone \
     -w /drone \
-    plugins/kaniko-docker
+    plugins/kaniko:linux-amd64
 ```

cmd/kaniko-docker/main.go

@@ -99,6 +99,11 @@ func main() {
 			Usage:  "Skip registry tls verify",
 			EnvVar: "PLUGIN_SKIP_TLS_VERIFY",
 		},
+		cli.StringFlag{
+			Name:   "snapshot-mode",
+			Usage:  "Specify one of full, redo or time as snapshot mode",
+			EnvVar: "PLUGIN_SNAPSHOT_MODE",
+		},
 	}
 
 	if err := app.Run(os.Args); err != nil {
@@ -122,6 +127,7 @@ func run(c *cli.Context) error {
 			Repo:          c.String("repo"),
 			Labels:        c.StringSlice("custom-labels"),
 			SkipTlsVerify: c.Bool("skip-tls-verify"),
+			SnapshotMode:  c.String("snapshot-mode"),
 		},
 	}
 	return plugin.Exec()

cmd/kaniko-ecr/main.go

@@ -89,6 +89,11 @@ func main() {
 			Usage:  "ECR secret key",
 			EnvVar: "PLUGIN_SECRET_KEY",
 		},
+		cli.StringFlag{
+			Name:   "snapshot-mode",
+			Usage:  "Specify one of full, redo or time as snapshot mode",
+			EnvVar: "PLUGIN_SNAPSHOT_MODE",
+		},
 	}
 
 	if err := app.Run(os.Args); err != nil {
@@ -111,6 +116,7 @@ func run(c *cli.Context) error {
 			Target:       c.String("target"),
 			Repo:         fmt.Sprintf("%s/%s", c.String("registry"), c.String("repo")),
 			Labels:       c.StringSlice("custom-labels"),
+			SnapshotMode: c.String("snapshot-mode"),
 		},
 	}
 	return plugin.Exec()

cmd/kaniko-gcr/main.go

@@ -85,6 +85,11 @@ func main() {
 			Usage:  "docker username",
 			EnvVar: "PLUGIN_JSON_KEY",
 		},
+		cli.StringFlag{
+			Name:   "snapshot-mode",
+			Usage:  "Specify one of full, redo or time as snapshot mode",
+			EnvVar: "PLUGIN_SNAPSHOT_MODE",
+		},
 	}
 
 	if err := app.Run(os.Args); err != nil {
@@ -111,6 +116,7 @@ func run(c *cli.Context) error {
 			Target:       c.String("target"),
 			Repo:         fmt.Sprintf("%s/%s", c.String("registry"), c.String("repo")),
 			Labels:       c.StringSlice("custom-labels"),
+			SnapshotMode: c.String("snapshot-mode"),
 		},
 	}
 	return plugin.Exec()

kaniko.go

@@ -18,6 +18,7 @@ type (
 		Repo          string   // Docker build repository
 		Labels        []string // Label map
 		SkipTlsVerify bool     // Docker skip tls certificate verify for registry
+		SnapshotMode  string   // Kaniko snapshot mode
 	}
 
 	// Plugin defines the Docker plugin parameters.
@@ -62,6 +63,10 @@ func (p Plugin) Exec() error {
 		cmdArgs = append(cmdArgs, fmt.Sprintf("--skip-tls-verify=true"))
 	}
 
+	if p.Build.SnapshotMode != "" {
+		cmdArgs = append(cmdArgs, fmt.Sprintf("--snapshotMode=%s", p.Build.SnapshotMode))
+	}
+
 	cmd := exec.Command("/kaniko/executor", cmdArgs...)
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr