Fix devcontainer

Author: eel76-hmi

.devcontainer/Dockerfile

@@ -7,12 +7,8 @@ RUN apt-get update && apt-get install -y \
 
 RUN pip install clang-format pre-commit
 
-WORKDIR /temp-repo
+COPY docker-entrypoint.sh /
+RUN chmod +x /docker-entrypoint.sh
 
-COPY .pre-commit-config.yaml .
-
-RUN git init . && pre-commit install --install-hooks
-
-WORKDIR /
-
-RUN rm -rf temp-repo
+ENTRYPOINT [ "/docker-entrypoint.sh" ]
+CMD [ "sleep", "infinity" ]

.devcontainer/devcontainer.json

@@ -4,7 +4,7 @@
 	"name": "C++",
 	"build": {
 		"dockerfile": "Dockerfile",
-		"context": ".."
+		"cacheFrom": "ghcr.io/volumegraphics/traits-devcontainer"
 	},
 
 	// Features to add to the dev container. More info: https://containers.dev/features.
@@ -31,7 +31,9 @@
 				"twxs.cmake"
 			]
         }
-    }
+    },
+
+	"overrideCommand": false
 
 	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
 	// "remoteUser": "root"

.devcontainer/docker-entrypoint.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+pre-commit install --install-hooks
+
+exec "$@"