add flake support, build docker image with nix

.drone.yml

@@ -3,20 +3,45 @@ type: docker
 name: default
 
 steps:
-  - name: build
-    image: golang
+  - name: build docker image
+    image: "nixos/nix"
+    environment:
+      USER: root
     commands:
-      - CGO_ENABLED=0 GOOS=linux go build -a -ldflags '-extldflags "-static"' .
+      - nix-channel --update
+      - nix-build docker.nix
+      - cp $(readlink result) /image/docker.tgz
+    volumes:
+      - name: image
+        path: /image
 
-  - name: publish
-    image: techknowlogick/drone-docker:latest
-    privileged: true
-    settings:
-      repo: garionion/gitea-attachements-proxy
-      debug: true
-      password:
-        from_secret: docker_password
-      username:
+  - name: push docker image
+    image: docker:dind
+    volumes:
+      - name: image
+        path: /image
+      - name: dockersock
+        path: /var/run/
+    commands:
+      - docker load -i /image/docker.tgz
+      - echo $DOCKER_PASSWORD | docker login -u $DOCKER_USERNAME --password-stdin https://registry-1.docker.io/
+      - docker push garionion/gitea-attachements-proxy
+    environment:
+      DOCKER_USERNAME:
         from_secret: docker_username
-      tags:
-        - latest
+      DOCKER_PASSWORD:
+        from_secret: docker_password
+
+services:
+  - name: docker
+    image: docker:dind
+    privileged: true
+    volumes:
+      - name: dockersock
+        path: /var/run
+
+volumes:
+  - name: image
+    temp: {}
+  - name: dockersock
+    temp: {}

.envrc

@@ -0,0 +1 @@
+use nix

default.nix

@@ -0,0 +1,7 @@
+{ pkgs ? import <nixpkgs> { } }:
+with pkgs;
+mkShell {
+    nativeBuildInputs = [
+        go_1_17
+    ];
+}

docker.nix

@@ -0,0 +1,17 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+let
+    callPackage = pkgs.lib.callPackageWith pkgs;
+    gitea-attachements-proxy = callPackage ./package.nix { };
+in
+pkgs.dockerTools.buildImage {
+    name = "garionion/gitea-attachements-proxy";
+    tag = "latest";
+
+    contents = [ pkgs.cacert gitea-attachements-proxy ];
+
+    config = {
+        Cmd = [ "/bin/gitea-attachements-proxy" ];
+        WorkingDir = "/";
+    };
+}

flake.lock

@@ -0,0 +1,41 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1638122382,
+        "narHash": "sha256-sQzZzAbvKEqN9s0bzWuYmRaA03v40gaJ4+iL1LXjaeI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "74f7e4319258e287b0f9cb95426c9853b282730b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1642069818,
+        "narHash": "sha256-666w6j8wl/bojfgpp0k58/UJ5rbrdYFbI2RFT2BXbSQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "46821ea01c8f54d2a20f5a503809abfc605269d7",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,15 @@
+{
+    description = "gitea-attachements-proxy";
+
+    inputs.flake-utils.url = "github:numtide/flake-utils";
+
+    outputs = { self, nixpkgs, flake-utils }:
+        flake-utils.lib.eachDefaultSystem
+            (system:
+                let pkgs = nixpkgs.legacyPackages.${system}; in
+                {
+                    devShell = import ./default.nix { inherit pkgs; };
+                    defaultPackage = import ./package.nix { inherit pkgs;};
+                }
+            );
+}

package.nix

@@ -0,0 +1,30 @@
+{ pkgs ? import <nixpkgs> { } }:
+with pkgs;
+let
+    version = "0.0.1";
+    deps = [];
+    nativeDeps = [
+    ];
+in
+pkgs.buildGo117Module {
+  pname = "gitea-attachements-proxy";
+  inherit version;
+
+  src = ./.;
+
+  buildInputs = [
+  ] ++deps;
+  nativeBuildInputs = [
+  ] ++nativeDeps;
+
+  tags = [ ];
+
+  allowGoReference = true;
+
+  vendorSha256 = "sha256-9ppXRHVSzXyEvCx+5ZOB+A//THbl/5k2wRy+jLaRUkE=";
+
+  meta = {
+    description = "A Wrapper around the gitea API to get attachments by tags";
+    homepage = "https://git.entr0py.de/garionion/gitea-attachements-proxy";
+  };
+}