Include templating support (#382)

build.py

@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+
+import os
+import json
+import subprocess
+import shutil
+import sys
+import tempfile
+
+from jinja2 import Environment, FileSystemLoader
+
+jinja_env = Environment(
+    loader=FileSystemLoader('templates')
+)
+
+
+def build_dockerfile(sha1, version, tags):
+    build_dir = tempfile.mktemp()
+    shutil.copytree("docker", build_dir)
+    template = jinja_env.get_template("Dockerfile.jinja2")
+    dockerfile_content = template.render(sha1=sha1, version=version)
+    with open(os.path.join(build_dir, "Dockerfile"), "w") as dockerfile:
+        dockerfile.write(dockerfile_content)
+    build_command = ["docker", "build", "."]
+    for tag in tags:
+        build_command.extend(["-t", f"factoriotools/factorio:{tag}"])
+    try:
+        subprocess.run(build_command, cwd=build_dir, check=True)
+    except subprocess.CalledProcessError:
+        print("Build of image failed")
+        exit(1)
+
+
+def login():
+    try:
+        username = os.environ["DOCKER_USERNAME"]
+        password = os.environ["DOCKER_PASSWORD"]
+        subprocess.run(["docker", "login", "-u", username, "-p", password], check=True)
+    except KeyError:
+        print("Username and password need to be given")
+        exit(1)
+    except subprocess.CalledProcessError:
+        print("Docker login failed")
+        exit(1)
+
+
+def main(push_tags=False):
+    with open(os.path.join(os.path.dirname(__file__), "buildinfo.json")) as file_handle:
+        builddata = json.load(file_handle)
+
+    if push_tags:
+        login()
+
+    for version, buildinfo in builddata.items():
+        sha1 = buildinfo["sha1"]
+        tags = buildinfo["tags"]
+        build_dockerfile(sha1, version, tags)
+        if not push_tags:
+            continue
+        for tag in tags:
+            try:
+                subprocess.run(["docker", "push", f"factoriotools/factorio:{tag}"],
+                               check=True)
+            except subprocess.CalledProcessError:
+                print("Docker push failed")
+                exit(1)
+
+
+if __name__ == '__main__':
+    push_tags = len(sys.argv) > 1 and sys.argv[1] == "--push-tags"
+    main(push_tags)