update checksum post-processor docs

post-processor/checksum/post-processor.go

@@ -24,7 +24,6 @@ import (
 type Config struct {
 	common.PackerConfig `mapstructure:",squash"`
 
-	Keep          bool     `mapstructure:"keep_input_artifact"`
 	ChecksumTypes []string `mapstructure:"checksum_types"`
 	OutputPath    string   `mapstructure:"output"`
 	ctx           interpolate.Context

post-processor/checksum/post-processor.hcl2spec.go

@@ -16,7 +16,6 @@ type FlatConfig struct {
 	PackerOnError       *string           `mapstructure:"packer_on_error" cty:"packer_on_error" hcl:"packer_on_error"`
 	PackerUserVars      map[string]string `mapstructure:"packer_user_variables" cty:"packer_user_variables" hcl:"packer_user_variables"`
 	PackerSensitiveVars []string          `mapstructure:"packer_sensitive_variables" cty:"packer_sensitive_variables" hcl:"packer_sensitive_variables"`
-	Keep                *bool             `mapstructure:"keep_input_artifact" cty:"keep_input_artifact" hcl:"keep_input_artifact"`
 	ChecksumTypes       []string          `mapstructure:"checksum_types" cty:"checksum_types" hcl:"checksum_types"`
 	OutputPath          *string           `mapstructure:"output" cty:"output" hcl:"output"`
 }
@@ -40,7 +39,6 @@ func (*FlatConfig) HCL2Spec() map[string]hcldec.Spec {
 		"packer_on_error":            &hcldec.AttrSpec{Name: "packer_on_error", Type: cty.String, Required: false},
 		"packer_user_variables":      &hcldec.AttrSpec{Name: "packer_user_variables", Type: cty.Map(cty.String), Required: false},
 		"packer_sensitive_variables": &hcldec.AttrSpec{Name: "packer_sensitive_variables", Type: cty.List(cty.String), Required: false},
-		"keep_input_artifact":        &hcldec.AttrSpec{Name: "keep_input_artifact", Type: cty.Bool, Required: false},
 		"checksum_types":             &hcldec.AttrSpec{Name: "checksum_types", Type: cty.List(cty.String), Required: false},
 		"output":                     &hcldec.AttrSpec{Name: "output", Type: cty.String, Required: false},
 	}

website/pages/docs/post-processors/checksum.mdx

@@ -1,18 +1,10 @@
 ---
 description: >
   The checksum post-processor computes specified checksum for the artifact list
-
-  from an upstream builder or post-processor. All downstream post-processors
-  will
-
+  from an upstream builder or post-processor. All downstream post-processors will
   see the new artifacts. The primary use-case is compute checksum for artifacts
-
-  allows to verify it later. So firstly this post-processor get artifact,
-  compute
-
-  it checksum and pass to next post-processor original artifacts and checksum
-
-  files.
+  allows to verify it later. So firstly this post-processor get artifact, compute
+  it checksum and pass to next post-processor original artifacts and checksum files.
 layout: docs
 page_title: Checksum - Post-Processors
 sidebar_title: Checksum
@@ -36,24 +28,42 @@ a third-party post-processor.
 
 ## Basic example
 
-The example below is fully functional.
+<Tabs>
+<Tab heading="JSON">
 
 ```json
 {
-  "type": "checksum"
+  "type": "checksum",
+  "checksum_types": ["sha1", "sha256"],
+  "output": "packer_{{.BuildName}}_{{.ChecksumType}}.checksum"
 }
 ```
 
+</Tab>
+<Tab heading="HCL2">
+
+```hcl
+post-processor "checksum" {
+  checksum_types = ["sha1", "sha256"]
+  output = "packer_{{.BuildName}}_{{.ChecksumType}}.checksum"
+}
+```
+
+</Tab>
+</Tabs>
+
 ## Configuration Reference
 
 Optional parameters:
 
 - `checksum_types` (array of strings) - An array of strings of checksum types
-  to compute. Allowed values are md5, sha1, sha224, sha256, sha384, sha512.
-
-- `keep_input_artifact` (boolean) - Unlike most post-processors, setting
-  `keep_input_artifact` will have no effect; the checksum post-processor
-  always saves the artifact that it is calculating the checksum for.
+  to compute. If empty, Defaults to md5. Allowed values are:
+  * md5
+  * sha1
+  * sha224
+  * sha256
+  * sha384
+  * sha512
 
 - `output` (string) - Specify filename to store checksums. This defaults to
   `packer_{{.BuildName}}_{{.BuilderType}}_{{.ChecksumType}}.checksum`. For