Parallelize docker_ci

scripts/docker_ci.sh

@@ -22,8 +22,6 @@ run_combo() {
     local npm_version="$2"
     local image="node:${node_version}-slim"
 
-    echo -e "${YELLOW}=== Node ${node_version} / npm ${npm_version} ===${NC}"
-
     docker run --rm \
         -v "$SCRIPT_DIR:/src:ro" \
         -w /tmp \
@@ -39,14 +37,54 @@ run_combo() {
             npm run build
         "
 
-    echo -e "${GREEN}Passed:${NC} Node ${node_version} / npm ${npm_version}"
-    echo
 }
 
+TMP_DIR="$(mktemp -d)"
+declare -a JOB_PIDS=()
+declare -a JOB_LABELS=()
+declare -a JOB_LOGS=()
+
+cleanup() {
+    rm -rf "$TMP_DIR"
+}
+
+trap cleanup EXIT
+
 for node_version in "${NODE_VERSIONS[@]}"; do
     for npm_version in "${NPM_VERSIONS[@]}"; do
-        run_combo "$node_version" "$npm_version"
+        label="Node ${node_version} / npm ${npm_version}"
+        log_file="$TMP_DIR/node-${node_version}-npm-${npm_version}.log"
+
+        echo -e "${BLUE}Starting:${NC} ${label}"
+        (
+            echo -e "${YELLOW}=== ${label} ===${NC}"
+            run_combo "$node_version" "$npm_version"
+        ) >"$log_file" 2>&1 &
+
+        JOB_PIDS+=("$!")
+        JOB_LABELS+=("$label")
+        JOB_LOGS+=("$log_file")
     done
 done
 
+echo
+
+failures=0
+for idx in "${!JOB_PIDS[@]}"; do
+    if wait "${JOB_PIDS[$idx]}"; then
+        echo -e "${GREEN}Passed:${NC} ${JOB_LABELS[$idx]}"
+    else
+        failures=$((failures + 1))
+        echo -e "${RED}Failed:${NC} ${JOB_LABELS[$idx]}"
+        echo -e "${YELLOW}--- ${JOB_LABELS[$idx]} log ---${NC}"
+        cat "${JOB_LOGS[$idx]}"
+        echo
+    fi
+done
+
+if (( failures > 0 )); then
+    echo -e "${RED}=== Docker CI matrix failed (${failures} job(s)) ===${NC}"
+    exit 1
+fi
+
 echo -e "${GREEN}=== Docker CI matrix passed ===${NC}"