added example

.devcontainer/Dockerfile

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+FROM rust:1-bookworm
+RUN apt update && apt upgrade -y && apt install fish iputils-ping -y
+
+RUN useradd -ms /bin/fish vscode
+USER vscode
+RUN rustup target add wasm32-unknown-unknown
+RUN rustup component add rustfmt clippy
+RUN cargo install cargo-leptos

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/rust
+{
+	"name": "Rust",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"dockerComposeFile": "docker-compose.yml",
+	"service": "app",
+	"workspaceFolder": "/workspace",
+
+	// Use 'mounts' to make the cargo cache persistent in a Docker Volume.
+	// "mounts": [
+	// 	{
+	// 		"source": "devcontainer-cargo-cache-${devcontainerId}",
+	// 		"target": "/usr/local/cargo",
+	// 		"type": "volume"
+	// 	}
+	// ]
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {
+	// 	"ghcr.io/meaningful-ooo/devcontainer-features/fish:1": {}
+	// },
+	"mounts": [
+        "source=/home/tobi/.ssh,target=/home/vscode/.ssh,type=bind"
+    ],
+	
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	//"postCreateCommand": "git clone https://gitea.maiertobi.de/tobimai/dotfiles.git /home/vscode/dotfiles && cargo install cargo-tarpaulin",
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"serayuzgur.crates",
+				"tamasfe.even-better-toml",
+				"vadimcn.vscode-lldb",
+				"mutantdino.resourcemonitor",
+				"rust-lang.rust-analyzer",
+				"ms-azuretools.vscode-docker"
+			],
+			"settings": { 
+				"terminal.integrated.defaultProfile.linux": "Fish",
+				"terminal.integrated.profiles.linux": {
+					"Fish": {
+						"path": "fish"
+					}
+				}
+    		}
+		}
+	},
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	"remoteUser": "vscode"
+}

.devcontainer/docker-compose.yml

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+version: '3'
+services:
+  app:
+    build:
+      context: ..
+      dockerfile: .devcontainer/Dockerfile
+    volumes:
+      - ..:/workspace:cached
+    command: sleep infinity