Use dockerfile grammar from tm4e

It's regularly updated there and widely available so let's have less
"conflicting" grammars.

Author: akurtakov

containers/org.eclipse.linuxtools.docker.editor.ls/META-INF/MANIFEST.MF

@@ -13,6 +13,7 @@ Require-Bundle: org.eclipse.lsp4e;bundle-version="0.11.0",
  org.eclipse.tm4e.registry;bundle-version="0.1.0",
  org.eclipse.tm4e.ui;bundle-version="0.1.0",
  org.eclipse.core.runtime;bundle-version="3.13.0",
- org.eclipse.wildwebdeveloper.embedder.node
+ org.eclipse.wildwebdeveloper.embedder.node,
+ org.eclipse.tm4e.language_pack;bundle-version="0.14.1"
 Eclipse-BundleShape: dir
 Automatic-Module-Name: org.eclipse.linuxtools.docker.editor.ls

containers/org.eclipse.linuxtools.docker.editor.ls/build.properties

@@ -3,6 +3,5 @@ output.. = target/classes/
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
-               grammars/,\
                language-server/,\
                icons/

containers/org.eclipse.linuxtools.docker.editor.ls/grammars/Dockerfile.tmLanguage

@@ -9,50 +9,13 @@
             label="Dockerfile Language Server">
       </server>
       <contentTypeMapping
-            contentType="org.eclipse.linuxtools.docker.editor.ls"
+            contentType="org.eclipse.tm4e.language_pack.dockerfile"
             languageId="Dockerfile"
             id="org.eclipse.linuxtools.docker.editor.ls.server">
       </contentTypeMapping>
    </extension>
-   <extension
-         point="org.eclipse.ui.editors">
-      <editorContentTypeBinding
-            contentTypeId="org.eclipse.linuxtools.docker.editor.ls"
-            editorId="org.eclipse.ui.genericeditor.GenericEditor">
-      </editorContentTypeBinding>
-   </extension>
-   <extension
-         point="org.eclipse.core.contenttype.contentTypes">
-      <content-type
-            base-type="org.eclipse.core.runtime.text"
-            file-extensions="Dockerfile,Containerfile,dockerfile"
-            file-names="Dockerfile,Containerfile"
-            file-patterns="Dockerfile.*,Containerfile.*"
-            id="org.eclipse.linuxtools.docker.editor.ls"
-            name="Dockerfile"
-            priority="normal">
-      </content-type>
-   </extension>
-   <extension
-         point="org.eclipse.tm4e.registry.grammars">
-      <grammar
-            path="grammars/Dockerfile.tmLanguage"
-            scopeName="source.dockerfile">
-      </grammar>
-      <scopeNameContentTypeBinding
-            contentTypeId="org.eclipse.linuxtools.docker.editor.ls"
-            scopeName="source.dockerfile">
-      </scopeNameContentTypeBinding>
-   </extension>
-   <extension
-         point="org.eclipse.ui.genericeditor.presentationReconcilers">
-      <presentationReconciler
-            class="org.eclipse.tm4e.ui.text.TMPresentationReconciler"
-            contentType="org.eclipse.linuxtools.docker.editor.ls">
-      </presentationReconciler>
-   </extension>
    <extension point="org.eclipse.ui.genericeditor.icons">
-		<icon contentType="org.eclipse.linuxtools.docker.editor.ls" icon="icons/dockerfile.png" />
+		<icon contentType="org.eclipse.tm4e.language_pack.dockerfile" icon="icons/dockerfile.png" />
 	</extension>
 
 </plugin>

containers/org.eclipse.linuxtools.docker.editor.ls/plugin.xml

@@ -60,6 +60,7 @@
 <unit id="org.eclipse.zest.feature.group" version="0.0.0"/>
 <unit id="org.eclipse.lsp4e" version="0.0.0"/>
 <unit id="org.eclipse.tm4e.feature.feature.group" version="0.0.0"/>
+<unit id="org.eclipse.tm4e.language_pack.feature.feature.group" version="0.0.0"/>
 <repository location="https://download.eclipse.org/releases/latest/"/>
 </location>
 <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">