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build-docker-image.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &> /dev/null && pwd)
+ENV_NAME="${1:-test}"
+IMAGE_REPO="${2:-}"
+CUSTOM_TAG="${3:-}"
+DOCKERFILE="${SCRIPT_DIR}/Dockerfile"
+
+if [[ "${IMAGE_REPO}" == *":"* ]]; then
+  echo "IMAGE_NAME should not include a tag. Pass the tag as the third argument." >&2
+  exit 1
+fi
+
+case "${ENV_NAME}" in
+  prod)
+    APP_PORT=5222
+    DEFAULT_IMAGE_REPO="fst-app-release"
+    ;;
+  test)
+    APP_PORT=5228
+    DEFAULT_IMAGE_REPO="fst-app-test"
+    ;;
+  *)
+    echo "ENV_NAME must be 'prod' or 'test' (got: ${ENV_NAME})." >&2
+    exit 1
+    ;;
+esac
+
+if [[ -z "${IMAGE_REPO}" ]]; then
+  IMAGE_REPO="${DEFAULT_IMAGE_REPO}"
+fi
+
+if ! command -v docker >/dev/null 2>&1; then
+  echo "docker not found. Please install Docker first." >&2
+  exit 1
+fi
+
+BUILD_TIME=$(date +%Y%m%d%H%M)
+TAG_SUFFIX="${CUSTOM_TAG:-${BUILD_TIME}}"
+IMAGE_NAME="${IMAGE_REPO}:${TAG_SUFFIX}"
+
+echo "Building image '${IMAGE_NAME}' with APP_PORT=${APP_PORT}"
+docker build "${SCRIPT_DIR}" -f "${DOCKERFILE}" -t "${IMAGE_NAME}" --build-arg APP_PORT="${APP_PORT}"
+
+echo "Build complete."
+echo "Run example: docker run -d -p ${APP_PORT}:${APP_PORT} --name ${IMAGE_NAME} ${IMAGE_NAME}"