dockerfile: fix lint rules links in index

Signed-off-by: CrazyMax <[email protected]>

Author: crazy-max

frontend/dockerfile/docs/rules/_index.md

@@ -29,59 +29,59 @@ $ docker build --check .
   </thead>
   <tbody>
     <tr>
-      <td><a href="./stage-name-casing.md">StageNameCasing</a></td>
+      <td><a href="./stage-name-casing/">StageNameCasing</a></td>
       <td>Stage names should be lowercase</td>
     </tr>
     <tr>
-      <td><a href="./from-as-casing.md">FromAsCasing</a></td>
+      <td><a href="./from-as-casing/">FromAsCasing</a></td>
       <td>The 'as' keyword should match the case of the 'from' keyword</td>
     </tr>
     <tr>
-      <td><a href="./no-empty-continuations.md">NoEmptyContinuations</a></td>
+      <td><a href="./no-empty-continuations/">NoEmptyContinuations</a></td>
       <td>Empty continuation lines will become errors in a future release</td>
     </tr>
     <tr>
-      <td><a href="./consistent-instruction-casing.md">ConsistentInstructionCasing</a></td>
+      <td><a href="./consistent-instruction-casing/">ConsistentInstructionCasing</a></td>
       <td>Instructions should be in consistent casing (all lower or all upper)</td>
     </tr>
     <tr>
-      <td><a href="./file-consistent-command-casing.md">FileConsistentCommandCasing</a></td>
+      <td><a href="./file-consistent-command-casing/">FileConsistentCommandCasing</a></td>
       <td>All commands within the Dockerfile should use the same casing (either upper or lower)</td>
     </tr>
     <tr>
-      <td><a href="./duplicate-stage-name.md">DuplicateStageName</a></td>
+      <td><a href="./duplicate-stage-name/">DuplicateStageName</a></td>
       <td>Stage names should be unique</td>
     </tr>
     <tr>
-      <td><a href="./reserved-stage-name.md">ReservedStageName</a></td>
+      <td><a href="./reserved-stage-name/">ReservedStageName</a></td>
       <td>Reserved words should not be used as stage names</td>
     </tr>
     <tr>
-      <td><a href="./json-args-recommended.md">JSONArgsRecommended</a></td>
+      <td><a href="./json-args-recommended/">JSONArgsRecommended</a></td>
       <td>JSON arguments recommended for ENTRYPOINT/CMD to prevent unintended behavior related to OS signals</td>
     </tr>
     <tr>
-      <td><a href="./maintainer-deprecated.md">MaintainerDeprecated</a></td>
+      <td><a href="./maintainer-deprecated/">MaintainerDeprecated</a></td>
       <td>The MAINTAINER instruction is deprecated, use a label instead to define an image author</td>
     </tr>
     <tr>
-      <td><a href="./undefined-arg-in-from.md">UndefinedArgInFrom</a></td>
+      <td><a href="./undefined-arg-in-from/">UndefinedArgInFrom</a></td>
       <td>FROM command must use declared ARGs</td>
     </tr>
     <tr>
-      <td><a href="./workdir-relative-path.md">WorkdirRelativePath</a></td>
+      <td><a href="./workdir-relative-path/">WorkdirRelativePath</a></td>
       <td>Relative workdir without an absolute workdir declared within the build can have unexpected results if the base image changes</td>
     </tr>
     <tr>
-      <td><a href="./undefined-var.md">UndefinedVar</a></td>
+      <td><a href="./undefined-var/">UndefinedVar</a></td>
       <td>Variables should be defined before their use</td>
     </tr>
     <tr>
-      <td><a href="./multiple-instructions-disallowed.md">MultipleInstructionsDisallowed</a></td>
+      <td><a href="./multiple-instructions-disallowed/">MultipleInstructionsDisallowed</a></td>
       <td>Multiple instructions of the same type should not be used in the same stage</td>
     </tr>
     <tr>
-      <td><a href="./legacy-key-value-format.md">LegacyKeyValueFormat</a></td>
+      <td><a href="./legacy-key-value-format/">LegacyKeyValueFormat</a></td>
       <td>Legacy key/value format with whitespace separator should not be used</td>
     </tr>
   </tbody>

frontend/dockerfile/linter/docs/_index.md

@@ -30,8 +30,8 @@ $ docker build --check .
   <tbody>
     {{- range .Rules }}
     <tr>
-      <td><a href="./{{.Filename}}">{{.Name}}</a></td>
-      <td>{{.Description}}</td>
+      <td><a href="./{{ .PageName }}/">{{ .Name }}</a></td>
+      <td>{{ .Description }}</td>
     </tr>
     {{- end }}
   </tbody>

frontend/dockerfile/linter/generate.go

@@ -23,7 +23,7 @@ type Rule struct {
 	Name        string
 	Description string
 	URL         *url.URL
-	Filename    string
+	PageName    string
 	URLAlias    string
 }
 
@@ -82,7 +82,7 @@ func genRuleDoc(rule Rule, tmpl *template.Template) (bool, error) {
 	if err != nil {
 		return false, err
 	}
-	outputfile, err := os.Create(path.Join(destDir, rule.Filename))
+	outputfile, err := os.Create(path.Join(destDir, rule.PageName+".md"))
 	if err != nil {
 		return false, err
 	}
@@ -144,7 +144,7 @@ func listRules() ([]Rule, error) {
 								case "Name":
 									if basicLit, ok := kv.Value.(*ast.BasicLit); ok {
 										rule.Name = strings.Trim(basicLit.Value, `"`)
-										rule.Filename = fmt.Sprintf("%s.md", camelToKebab(rule.Name))
+										rule.PageName = camelToKebab(rule.Name)
 									}
 								case "Description":
 									if basicLit, ok := kv.Value.(*ast.BasicLit); ok {