Implement container-based builds

We will now use containers to build everything. The container
spec (Containerfile/Dockerfile) specify the base image, and each package
is built independently inside of it.

Author: pinkwah

.envrc

@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 eval "$(devenv direnvrc)"
 
 use devenv

.gitignore

@@ -25,3 +25,4 @@ devenv.local.nix
 
 # Output from Karsk
 output/
+venv

Dockerfile

@@ -17,6 +17,62 @@
         "type": "github"
       }
     },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1767039857,
+        "owner": "NixOS",
+        "repo": "flake-compat",
+        "rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "git-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1774104215,
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "f799ae951fde0627157f40aec28dec27b22076d0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "git-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1762808025,
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "cb5e3fdca1de58ccbc3ef53de65bd372b48f567c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "inputs": {
         "nixpkgs-src": "nixpkgs-src"
@@ -56,10 +112,14 @@
     "root": {
       "inputs": {
         "devenv": "devenv",
-        "nixpkgs": "nixpkgs"
+        "git-hooks": "git-hooks",
+        "nixpkgs": "nixpkgs",
+        "pre-commit-hooks": [
+          "git-hooks"
+        ]
       }
     }
   },
   "root": "root",
   "version": 7
-}
+}

devenv.lock

@@ -6,6 +6,7 @@
   languages.python = {
     enable = true;
     uv.enable = true;
+    uv.sync.enable = true;
     venv.enable = true;
   };
 }

devenv.nix

@@ -0,0 +1,7 @@
+FROM registry.access.redhat.com/ubi8/ubi:latest
+
+RUN dnf -y groupinstall "Development Tools"
+RUN dnf -y install which
+RUN dnf -y install python3.11
+RUN dnf -y install gcc-gfortran
+RUN dnf -y install git

examples/full/Containerfile

@@ -1,5 +1,6 @@
 main-package: pflotran
 entrypoint: bin/cirrus
+build-image: ./Containerfile
 
 packages:
   - name: petsc

examples/full/cirrus.config.yaml

@@ -0,0 +1 @@
+FROM alpine

examples/hello_world/Containerfile

@@ -1,5 +1,6 @@
 main-package: hello
 entrypoint: bin/binary.sh
+build-image: Containerfile
 
 packages:
   - name: hello