Support Windows and maintain separate git index when running container

meta/docker-entrypoint.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-set -eu
+set -eu -- meta/docker-msys-swap-git-index.sh "$@"
 
 host_uid="$(stat -c %u /osu-wiki)"
 host_gid="$(stat -c %g /osu-wiki)"

meta/docker-msys-swap-git-index.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+set -eu
+
+if test -z "$OSU_WIKI_MSYS"; then
+  exec "$@"
+fi
+
+mv -T .git/index .git/index-host
+
+if test -f .git/index-container; then
+  mv -T .git/index-container .git/index
+else
+  printf '\033[1m## This is your first time running the Docker container.\n' >&2
+  printf '## A separate git index needs to be maintained when using this container on Windows.\n' >&2
+  printf '## Please \033[4mDO NOT\033[0;1m run any git commands while this container is running.\n' >&2
+  printf '## Creating index... (this may take a while)\033[m\n' >&2
+  git reset >/dev/null 2>&1
+  printf '\033[1;32m## Created index. It will be stored at \033[4m.git/index-container\033[0;1;32m.\033[m\n' >&2
+fi
+
+"$@" && :
+
+exit_code=$?
+
+mv -T .git/index .git/index-container
+mv -T .git/index-host .git/index
+
+exit "$exit_code"

run-checks.sh

@@ -21,11 +21,13 @@ build_docker_image() {
 }
 
 run_in_docker() {
+  msys="$(test -z "${MSYSTEM:-}" || printf 1)"
   remove_node_modules="$(test -e node_modules || printf 1)"
 
   # Map the host repo directory to /osu-wiki, but use node_modules from the
   # image. Don't exit the script on fail; store the exit code to return later
-  docker run \
+  MSYS_NO_PATHCONV="$msys" docker run \
+    -e "OSU_WIKI_MSYS=$msys" \
     --rm \
     --volume "$(pwd):/osu-wiki" \
     --volume /osu-wiki/node_modules/ \