Add memory storage to Linux build and fix permissions

lib/CMakeLists.txt

@@ -43,6 +43,7 @@ set(SRCS decorators/BaseDecorator.cpp
   stats/Statistics.cpp
   stats/MetaStats.cpp
   offline/StorageObserver.cpp
+  offline/MemoryStorage.cpp
   offline/OfflineStorage_SQLite.cpp
   offline/FifoFileStorage.cpp
   offline/OfflineStorageHandler.cpp

tools/setup-buildtools-min.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+apt install -y automake
+apt install -y libtool-bin
+apt install -y cmake
+apt install -y sqlite
+apt install -y curl libcurl4-openssl-dev
+apt install -y zlib1g-dev
+apt install -y git
+apt install -y build-essential
+apt install -y libssl-dev
+apt install -y zlib1g-dev
+apt install -y libsqlite3-dev
+# Stock sqlite may be too old
+#apt install libsqlite3-dev
+apt install -y wget