Trying a better build system.

Dockerfile

@@ -69,6 +69,9 @@ WORKDIR /app/
 # Ref: https://docs.astral.sh/uv/guides/integration/docker/#using-the-environment
 ENV PATH="/app/.venv/bin:$PATH"
 
+# Pass version from Makefile to setuptools-scm since .git is not in context
+ARG SETUPTOOLS_SCM_PRETEND_VERSION_FOR_BREWMAN
+ENV SETUPTOOLS_SCM_PRETEND_VERSION_FOR_BREWMAN=$SETUPTOOLS_SCM_PRETEND_VERSION_FOR_BREWMAN
 
 # Install dependencies
 # Ref: https://docs.astral.sh/uv/guides/integration/docker/#intermediate-layers

Makefile

@@ -1,17 +1,13 @@
 .PHONY: build-production
 build-production: ## Build the production container image. Usage: make build-production TAG=15.4.0
-	@echo "Cloning repository..."
-	@rm -rf .tmp-brewman
-	@git clone --depth 1 $(if $(TAG),--branch v$(TAG)) git@git.tanshu.com:tanshu/brewman.git .tmp-brewman
-
 	@echo "Building image..."
 	@podman manifest rm registry.tanshu.com/brewman:latest 2>/dev/null || true
 	@podman build \
 		--platform linux/amd64,linux/arm64 \
 		--manifest registry.tanshu.com/brewman:latest \
 		--pull \
-		.tmp-brewman || (rm -rf .tmp-brewman && exit 1)
-	@rm -rf .tmp-brewman
+		--build-arg SETUPTOOLS_SCM_PRETEND_VERSION_FOR_BREWMAN=$(TAG) \
+		git@git.tanshu.com:tanshu/brewman.git#v$(TAG)
 
 	@echo "Pushing manifests..."
 	@podman manifest push --all registry.tanshu.com/brewman:latest docker://registry.tanshu.com/brewman:latest
@@ -19,15 +15,11 @@ build-production: ## Build the production container image. Usage: make build-pro
 
 .PHONY: build-check
 build-check: ## Multi-arch build without push (compile check). Usage: make build-check TAG=15.4.0
-	@echo "Cloning repository..."
-	@rm -rf .tmp-brewman
-	@git clone --depth 1 $(if $(TAG),--branch v$(TAG)) git@git.tanshu.com:tanshu/brewman.git .tmp-brewman
-
 	@echo "Building image..."
 	@podman manifest rm brewman:test 2>/dev/null || true
 	@podman build \
 		--platform linux/amd64,linux/arm64 \
 		--manifest brewman:test \
 		--pull \
-		.tmp-brewman || (rm -rf .tmp-brewman && exit 1)
-	@rm -rf .tmp-brewman
+		--build-arg SETUPTOOLS_SCM_PRETEND_VERSION_FOR_BREWMAN=$(TAG) \
+		git@git.tanshu.com:tanshu/brewman.git#v$(TAG)