update nix flake for gitlab CI building docker images

Signed-off-by: strawberry <strawberry@puppygock.gay>

flake.lock

@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1705625727,
-        "narHash": "sha256-naMq6+TNLpEiBBjc0XaCbMLYJxJXWTZz4JGSpYGgIOM=",
+        "lastModified": 1705974079,
+        "narHash": "sha256-HyC3C2esW57j6bG0MKwX4kQi25ltslRnr6z2uvpadJo=",
         "owner": "ipetkov",
         "repo": "crane",
-        "rev": "8f515142e805dc377cf8edb0ff75d14a11307f89",
+        "rev": "0b4e511fe6e346381e31d355e03de52aa43e8cb2",
         "type": "github"
       },
       "original": {
@@ -28,11 +28,11 @@
         "rust-analyzer-src": "rust-analyzer-src"
       },
       "locked": {
-        "lastModified": 1705731714,
-        "narHash": "sha256-aMeN/ASG4n7RIIPLiy+txoMdDTvIcaRDX6acbeeRtEU=",
+        "lastModified": 1706077451,
+        "narHash": "sha256-kd8Mlh+4NIG/NIkXeEwSIlwQuvysKJM4BeLrt2nvcc8=",
         "owner": "nix-community",
         "repo": "fenix",
-        "rev": "712f25ec7e1f5839d486b246a5afa5e31f5df6ff",
+        "rev": "77d5a2dd0b186c40953c435da6e0c2215d7e1dec",
         "type": "github"
       },
       "original": {
@@ -76,11 +76,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1705677747,
-        "narHash": "sha256-eyM3okYtMgYDgmYukoUzrmuoY4xl4FUujnsv/P6I/zI=",
+        "lastModified": 1705856552,
+        "narHash": "sha256-JXfnuEf5Yd6bhMs/uvM67/joxYKoysyE3M2k6T3eWbg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "bbe7d8f876fbbe7c959c90ba2ae2852220573261",
+        "rev": "612f97239e2cc474c13c9dafa0df378058c5ad8d",
         "type": "github"
       },
       "original": {
@@ -102,11 +102,11 @@
     "rust-analyzer-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1705697225,
-        "narHash": "sha256-eLMwix3LPsgqnbdLMWivBCSBrWnaAA50JtMNnInTopg=",
+        "lastModified": 1705864945,
+        "narHash": "sha256-ZATChFWHToTZQFLlzrzDUX8fjEbMHHBIyPaZU1JGmjI=",
         "owner": "rust-lang",
         "repo": "rust-analyzer",
-        "rev": "67cfbf231c1e2ba3129529de950d1c4ca7921404",
+        "rev": "d410d4a2baf9e99b37b03dd42f06238b14374bf7",
         "type": "github"
       },
       "original": {

flake.nix

@@ -47,6 +47,7 @@
         ];
       };
 
+      # Use mold on Linux
       stdenv = if pkgs.stdenv.isLinux then
         pkgs.stdenvAdapters.useMoldLinker pkgs.stdenv
       else
@@ -95,12 +96,44 @@
     in
     {
       packages.default = builder {
-        src = ./.;
+        src = nix-filter {
+          root = ./.;
+          include = [
+            "src"
+            "Cargo.toml"
+            "Cargo.lock"
+          ];
+        };
+
+        # This is redundant with CI
+        doCheck = false;
 
         inherit
           env
           nativeBuildInputs
           stdenv;
+
+        meta.mainProgram = cargoToml.package.name;
+      };
+
+      packages.oci-image =
+      let
+        package = self.packages.${system}.default;
+      in
+      pkgs.dockerTools.buildImage {
+        name = package.pname;
+        tag = "latest";
+        config = {
+          # Use the `tini` init system so that signals (e.g. ctrl+c/SIGINT) are
+          # handled as expected
+          Entrypoint = [
+            "${pkgs.lib.getExe' pkgs.tini "tini"}"
+            "--"
+          ];
+          Cmd = [
+            "${pkgs.lib.getExe package}"
+          ];
+        };
       };
 
       devShells.default = (pkgs.mkShell.override { inherit stdenv; }) {