Dependabot should update .devcontainer images too

.devcontainer/Dockerfile

@@ -56,6 +56,3 @@ RUN echo "export PROMPT_COMMAND='history -a'" >> .bashrc \
 RUN mkdir -p .vscode-server .vscode-server-insiders commandhistory
 
 ENV DEBIAN_FRONTEND=
-
-
-

.devcontainer/devcontainer.json

@@ -4,7 +4,7 @@
 	"dockerComposeFile": ["docker-compose.yml","docker-compose.vscode.yml"],
 	"service": "web",
     "workspaceFolder": "/home/dev/frequi",
-	"settings": { 
+	"settings": {
 		"terminal.integrated.shell.linux": "/bin/bash",
 		"emmet.includeLanguages": {
 			"vue": "html",
@@ -13,10 +13,9 @@
 	},
 	"extensions": [
 		"octref.vetur",
-		"esbenp.prettier-vscode",
 		"dbaeumer.vscode-eslint",
 		"yzhang.markdown-all-in-one",
 		"marquesmps.dockerfile-validator",
 		"streetsidesoftware.code-spell-checker",
 	]
-}
+}

.github/dependabot.yml

@@ -6,6 +6,15 @@ updates:
     interval: "daily"
     time: "05:00"
   open-pull-requests-limit: 10
+
+- package-ecosystem: docker
+  directory: "/.devcontainer/"
+  schedule:
+    interval: "daily"
+    time: "05:00"
+  open-pull-requests-limit: 10
+  
+
 - package-ecosystem: npm
   directory: "/"
   schedule: