Add docker-build workarounds and container script

Makefile

@@ -50,6 +50,8 @@ TEXTSAVES ?= 0
 EXTERNAL_DATA ?= 0
 # Enable Discord Rich Presence
 DISCORDRPC ?= 0
+# Enable docker build workarounds
+DOCKERBUILD ?= 0
 
 # Various workarounds for weird toolchains
 
@@ -578,6 +580,12 @@ ifeq ($(IMMEDIATELOAD),1)
   CFLAGS += -DIMMEDIATELOAD
 endif
 
+# Check for docker build workaround option
+ifeq ($(DOCKERBUILD),1)
+  CC_CHECK += -DDOCKERBUILD
+  CFLAGS += -DDOCKERBUILD
+endif
+
 # Check for Puppycam option
 ifeq ($(BETTERCAMERA),1)
   CC_CHECK += -DBETTERCAMERA

src/game/save_file.c

@@ -399,7 +399,7 @@ BAD_RETURN(s32) save_file_copy(s32 srcFileIndex, s32 destFileIndex) {
 
 #ifdef TEXTSAVES
 static void save_file_load_textsaves(void) {
-    for (file = 0; file < NUM_SAVE_FILES; file++) {
+    for (int file = 0; file < NUM_SAVE_FILES; file++) {
         read_text_save(file);
     }
     gSaveFileModified = TRUE;

src/pc/fs/fs.c

@@ -5,7 +5,9 @@
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#ifndef DOCKERBUILD
 #include <dirent.h>
+#endif
 #include <ctype.h>
 #ifdef _WIN32
 #include <direct.h>
@@ -389,6 +391,9 @@ bool fs_sys_dir_exists(const char *name) {
 }
 
 bool fs_sys_walk(const char *base, walk_fn_t walk, void *user, const bool recur) {
+#ifdef DOCKERBUILD
+    return false;
+#else
     char fullpath[SYS_MAX_PATH];
     DIR *dir;
     struct dirent *ent;
@@ -420,6 +425,7 @@ bool fs_sys_walk(const char *base, walk_fn_t walk, void *user, const bool recur)
 
     closedir(dir);
     return ret;
+#endif
 }
 
 fs_pathlist_t fs_sys_enumerate(const char *base, const bool recur) {

src/pc/network/socket/socket_windows.h

@@ -2,7 +2,7 @@
 #define SOCKET_WINDOWS_H
 
 #include <winsock2.h>
-#include <Ws2tcpip.h>
+#include <ws2tcpip.h>
 
 #define SOCKET_LAST_ERROR WSAGetLastError()
 #define SOCKET_EWOULDBLOCK WSAEWOULDBLOCK