Build scripts: support building from a tag/commit

scripts/release/macos_x64/Dockerfile

@@ -1,4 +1,4 @@
 FROM p2pool_build_ubuntu
 ARG P2POOL_VERSION BUILD_TIMESTAMP
-ADD p2pool.tar p2pool_macos_x64.sh zutil.patch /p2pool/
-RUN /p2pool/p2pool_macos_x64.sh p2pool-${P2POOL_VERSION}-macos-x64 ${BUILD_TIMESTAMP}
+ADD p2pool_macos_x64.sh zutil.patch /p2pool/
+RUN /p2pool/p2pool_macos_x64.sh p2pool-${P2POOL_VERSION}-macos-x64 ${BUILD_TIMESTAMP} ${P2POOL_VERSION}

scripts/release/macos_x64/build.sh

@@ -3,7 +3,6 @@
 # Example usage: ./build.sh v4.8.1
 
 cd "$(dirname "$0")"
-[ ! -f "p2pool.tar" ] && tar -f p2pool.tar -c ../../cmake -c ../../external -c ../../src -c ../../CMakeLists.txt -c ../../LICENSE -c ../../README.md
 
 docker build --build-arg P2POOL_VERSION=$1 --build-arg BUILD_TIMESTAMP="$(git show --no-patch --format=%ct $1)" -t p2pool_macos_x64_build .
 
@@ -12,5 +11,3 @@ docker cp p2pool_macos_x64_build_container:/p2pool/build/p2pool-$1-macos-x64.tar
 docker rm p2pool_macos_x64_build_container
 
 docker image rm -f p2pool_macos_x64_build
-
-rm p2pool.tar

scripts/release/macos_x64/p2pool_macos_x64.sh

@@ -1,6 +1,11 @@
 #!/bin/sh
 set -e
 
+cd /p2pool
+git fetch --jobs=$(nproc)
+git checkout $3
+git submodule update --recursive --jobs $(nproc)
+
 export TZ=UTC0
 
 CURRENT_DATE=$(date -u -d @$2 +"%Y-%m-%d")