Support custom build and run for NextJS app (#969)

Part of https://www.notion.so/Laconic-Mainnet-Plan-1eca6b22d47280569cd0d1e6d711d949
For deploying frontend https://git.vdb.to/NasSharaf/laconic-deployer-frontend

Reviewed-on: #969
Reviewed-by: ashwin <ashwin@noreply.git.vdb.to>
Co-authored-by: Nabarun <nabarun@deepstacksoft.com>
Co-committed-by: Nabarun <nabarun@deepstacksoft.com>

stack_orchestrator/data/container-build/cerc-nextjs-base/scripts/build-app.sh

@@ -26,8 +26,14 @@ fi
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 WORK_DIR="${1:-/app}"
 
+if [ -f "${WORK_DIR}/build-webapp.sh" ]; then
+  echo "Building webapp with ${WORK_DIR}/build-webapp.sh ..."
 cd "${WORK_DIR}" || exit 1
 
+  ./build-webapp.sh || exit 1
+  exit 0
+fi
+
 if [ -f "next.config.mjs" ]; then
   NEXT_CONFIG_JS="next.config.mjs"
   IMPORT_OR_REQUIRE="import"

stack_orchestrator/data/container-build/cerc-nextjs-base/scripts/start-serving-app.sh

@@ -30,6 +30,13 @@ fi
 CERC_WEBAPP_FILES_DIR="${CERC_WEBAPP_FILES_DIR:-/app}"
 cd "$CERC_WEBAPP_FILES_DIR"
 
+if [ -f "./run-webapp.sh" ]; then
+  echo "Running webapp with run-webapp.sh ..."
+  cd "${WORK_DIR}" || exit 1
+  ./run-webapp.sh &
+  tpid=$!
+  wait $tpid
+else 
   "$SCRIPT_DIR/apply-runtime-env.sh" "`pwd`" .next .next-r
   mv .next .next.old
   mv .next-r/.next .
@@ -63,3 +70,4 @@ if [ "$CERC_NEXTJS_SKIP_GENERATE" != "true" ]; then
   fi
 
   $CERC_BUILD_TOOL start . -- -p ${CERC_LISTEN_PORT:-80}
+fi