nix setup

.gitignore

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+db/mysql_data

db/docker-compose.yml

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+services:
+  mysql:
+    image: mysql:8.0
+    container_name: tresor-mysql
+    restart: always
+    environment:
+      MYSQL_DATABASE: tresordb
+      MYSQL_ROOT_PASSWORD: 1234
+    ports:
+      - "3306:3306"
+    volumes:
+      - ./mysql_data:/var/lib/mysql

flake.lock

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+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1742889210,
+        "narHash": "sha256-hw63HnwnqU3ZQfsMclLhMvOezpM7RSB0dMAtD5/sOiw=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "698214a32beb4f4c8e3942372c694f40848b360d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "A very basic flake";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  };
+
+  outputs = { self, nixpkgs }: let
+      system = "x86_64-linux";
+      pkgs = import nixpkgs { inherit system; };
+    in {
+      devShells.${system}.default = pkgs.mkShell {
+        buildInputs = [
+          pkgs.docker
+          pkgs.docker-compose
+        ];
+
+        shellHook = ''
+      		docker compose -f db/docker-compose.yml up mysql -d
+		      trap 'docker compose -f db/docker-compose.yml down' EXIT
+        '';
+      };
+    };
+}