feat: add local build script

scripts/build.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+# Build Roc OCI images locally.
+#
+# Usage:
+#   ./scripts/build.sh [roc-version]
+#
+# Default ROC_VERSION is "0.0.0-alpha2".
+# Uses podman by default. Override with: BUILD_CMD=docker ./scripts/build.sh
+#
+# Builds all three targets: base, dev, ci
+# Tags each with the version and ":latest".
+#
+# Registry defaults to "git.roo.lol/jbrechtel".
+# Override with: REGISTRY=localhost:5000 ./scripts/build.sh
+
+set -euo pipefail
+
+ROC_VERSION="${1:-0.0.0-alpha2}"
+REGISTRY="${REGISTRY:-git.roo.lol/jbrechtel}"
+BUILD_CMD="${BUILD_CMD:-podman}"
+BUILD_FLAGS="-f Containerfile"
+HERE="$(cd "$(dirname "$0")/.." && pwd)"
+
+cd "$HERE"
+
+echo "=== Building Roc OCI images (version=${ROC_VERSION}, registry=${REGISTRY}) ==="
+echo ""
+
+build_target() {
+    local target="$1"
+    local image_name="$2"
+
+    echo "--- Building ${target} (${REGISTRY}/${image_name}:${ROC_VERSION}) ---"
+    $BUILD_CMD build \
+        $BUILD_FLAGS \
+        --target "$target" \
+        --build-arg "ROC_VERSION=${ROC_VERSION}" \
+        -t "${REGISTRY}/${image_name}:${ROC_VERSION}" \
+        -t "${REGISTRY}/${image_name}:latest" \
+        .
+    echo ""
+}
+
+build_target base  roc-tools-base
+build_target dev   roc-tools-dev
+build_target ci    roc-tools-ci
+
+echo "=== All images built successfully ==="
+echo ""
+echo "Images:"
+$BUILD_CMD images --format "table {{.Repository}}:{{.Tag}}\t{{.Size}}" \
+    | grep "${REGISTRY}/roc-tools"