rework docker image bits

.github/workflows/publish-docker.yml

···
         uses: actions/checkout@v4
 
       - name: build docker image
-        run: docker build .
+        run: docker build -t lurker:latest .
 
       - name: log in to github container registry
         uses: docker/login-action@v3
···
 
       - name: publish docker image
         run: |
-          docker load < result
           docker tag lurker:latest ghcr.io/${{ github.repository_owner }}/lurker:latest
           docker push ghcr.io/${{ github.repository_owner }}/lurker:latest

flake.nix

···
             cp -R ./node_modules/* $out/node_modules
             ls -la $out/node_modules
           '';
-          outputHash = "sha256-iv1DddCTB1yyu21Ev/c4xtLHSvDas9jQAO2Ob9Iah2Q=";
+          outputHash = "sha256-wCMsk/gR+U5fCHcRj7Mxvh9Lg6wZAtMn7CvjyCPar+g=";
           outputHashAlgo = "sha256";
           outputHashMode = "recursive";
         };
···
 
           '';
         };
-      dockerImage = with final;
-        final.dockerTools.buildImage {
-          name = pname;
-          tag = "latest";
-
-          copyToRoot = final.buildEnv {
-            name = "image-root";
-            paths = [final.lurker];
-            pathsToLink = ["/bin"];
-          };
-
-          runAsRoot = ''
-            mkdir -p /data
-          '';
-
-          config = {
-            Cmd = ["/bin/${pname}"];
-            WorkingDir = "/data";
-            Volumes = {"/data" = {};};
-          };
-        };
     };
 
     devShell = forAllSystems (system: let
···
       });
 
     packages = forAllSystems (system: {
-      inherit (nixpkgsFor."${system}") lurker node_modules dockerImage;
+      inherit (nixpkgsFor."${system}") lurker node_modules;
     });
 
     defaultPackage = forAllSystems (system: nixpkgsFor."${system}".lurker);

readme.md

···
 # pull the latest image from gh container registry
 $ docker pull ghcr.io/oppiliappan/lurker:latest
 
-# the image will be marked as created on 1970, this is a
-# quirk of using nix, it should not affect usage
-$ docker image ls
 REPOSITORY                   TAG       IMAGE ID       CREATED        SIZE
 ghcr.io/oppiliappan/lurker   latest    ba3733164889   ???            227MB