infra: improve macOS local build experience

.gitignore

@@ -1,8 +1,13 @@
 # macOS folder metadata
 .DS_Store
 
+# macOS specific files
+MacOSX*.sdk.tar.xz
+SDKs/
+
 # User builds
 build_artifacts
+miniforge3/
 
 # Compiled Python code
 __pycache__
@@ -21,3 +26,6 @@ __pycache__
 .pixi
 pixi.toml
 pixi.lock
+
+# rattler-build outputs files
+output/

.scripts/run_docker_build.sh

@@ -44,7 +44,7 @@ mkdir -p "$ARTIFACTS"
 DONE_CANARY="$ARTIFACTS/conda-forge-build-done"
 rm -f "$DONE_CANARY"
 
-DOCKER_RUN_ARGS="-it"
+DOCKER_RUN_ARGS="-it ${CONDA_FORGE_DOCKER_RUN_ARGS}"
 
 if [ "${AZURE}" == "True" ]; then
     DOCKER_RUN_ARGS=""

build-locally.py

@@ -27,6 +27,10 @@ def setup_environment(ns):
             os.path.dirname(__file__), "SDKs"
         )
 
+    # The default cache location might not be writable using docker on macOS.
+    if ns.config.startswith("linux") and platform.system() == "Darwin":
+        os.environ["CONDA_FORGE_DOCKER_RUN_ARGS"] = "-e XDG_CACHE_HOME=/tmp/rattler_cache"
+
 
 def run_docker_build(ns):
     script = ".scripts/run_docker_build.sh"