Build image via Nix

app/backup/build/backup-psql/.gitignore

@@ -0,0 +1 @@
+result

app/backup/build/backup-psql/README.md

@@ -0,0 +1,8 @@
+## Build
+
+```bash
+docker load < $(nix-build docker.nix)
+docker push superboum/backup-psql:???
+```
+
+

app/backup/build/backup-psql/common.nix

@@ -0,0 +1,8 @@
+{
+  pkgsSrc = fetchTarball {
+    # Latest commit on https://github.com/NixOS/nixpkgs/tree/nixos-21.11
+    # As of 2022-04-15
+    url ="https://github.com/NixOS/nixpkgs/archive/2f06b87f64bc06229e05045853e0876666e1b023.tar.gz";
+    sha256 = "sha256:1d7zg96xw4qsqh7c89pgha9wkq3rbi9as3k3d88jlxy2z0ns0cy2";
+  };
+}

app/backup/build/backup-psql/default.nix

@@ -1,16 +1,33 @@
-{ pkgs ? import <nixpkgs> {} }:
 let
+  common = import ./common.nix;
+  pkgs = import common.pkgsSrc {};
   python-with-my-packages = pkgs.python3.withPackages (p: with p; [
     minio
   ]);
 in
-pkgs.mkShell {
+  pkgs.stdenv.mkDerivation {
+    name = "backup-psql";
+    src = pkgs.lib.sourceFilesBySuffices ./. [ ".py" ];
+
     buildInputs = [
       python-with-my-packages
       pkgs.age
       pkgs.postgresql_14
     ];
-  shellHook = ''
-    PYTHONPATH=${python-with-my-packages}/${python-with-my-packages.sitePackages}
+
+    buildPhase = ''
+      cat > backup-psql <<EOF
+        #!${pkgs.bash}/bin/bash
+        export PYTHONPATH=${python-with-my-packages}/${python-with-my-packages.sitePackages}
+        python3 $out/lib/backup-psql.py
+      EOF
+      chmod +x backup-psql
+    '';
+
+    installPhase = ''
+      mkdir -p $out/{bin,lib}
+      cp *.py $out/lib/backup-psql.py
+      cp backup-psql $out/bin/backup-sql
     '';
   }
+

app/backup/build/backup-psql/docker.nix

@@ -0,0 +1,11 @@
+let
+  common = import ./common.nix;
+  app = import ./default.nix;
+  pkgs = import common.pkgsSrc {};
+in
+  pkgs.dockerTools.buildLayeredImage {
+    name = "superboum/backup-psql-docker";
+    config = {
+      Cmd = [ "${app}/bin/backup-psql" ];
+    };
+ }