release_tool.py 文件源码

def set_docker_compose_version_to(dir, repo_docker, tag):
    """Modifies docker-compose files in the given directory so that repo_docker
    image points to the given tag."""

    compose_files = docker_compose_files_list(dir)
    for filename in compose_files:
        old = open(filename)
        new = open(filename + ".tmp", "w")
        for line in old:
            # Replace build tag with a new one.
            line = re.sub(r"^(\s*image:\s*mendersoftware/%s:)\S+(\s*)$" % re.escape(repo_docker),
                          r"\g<1>%s\2" % tag, line)
            new.write(line)
        new.close()
        old.close()
        os.rename(filename + ".tmp", filename)