add maintenance script for docker base images

.maintenance/src/index.ts

@@ -0,0 +1,73 @@
+import * as fs from "fs-extra-promise";
+import * as path from "path";
+import * as request from "request-promise";
+import chalk from "chalk";
+import * as semver from "semver";
+
+async function run()
+{
+    const root = "..";
+
+    let dirs = await fs.readdirAsync(root);
+    dirs = dirs.filter((source) => !source.startsWith(".") && (fs.lstatSync(path.join(root, source))).isDirectory());
+
+    let first = true;
+    let updated = false;
+    for (const addon of dirs)
+    {
+        if (!first)
+        {
+            console.log(chalk.gray("============================================================="));
+        }
+        else
+        {
+            first = false;
+        }
+
+        const configPath = path.join(root, addon, "config.json");
+        const config = await fs.readJSONAsync(configPath);
+        let version = semver.valid(config.version);
+        if (!version)
+        {
+            console.log(chalk.redBright(`version format for addon ${chalk.blue(addon)} not supported: ${config.version}`));
+            continue;
+        }
+
+        console.log(`loaded ${chalk.blue(addon)} ${chalk.cyanBright(version)}`);
+
+        if (!config.maintenance || !config.maintenance.github_release)
+        {
+            console.log(chalk.yellow("no valid maintenace section found, skipping"));
+            continue;
+        }
+
+        const dockerFilePath = path.join(root, addon, "Dockerfile");
+        const dockerFile = (await fs.readFileAsync(dockerFilePath)).toString();
+        const dockerBaseImageLine = dockerFile.split("\n")[0];
+        const parts = dockerBaseImageLine.split(":");
+        const image = parts[0].replace("FROM ", "");
+        const tag = parts[1];
+
+        const releaseInfo = await request({
+            uri: `${config.maintenance.github_release}/releases/latest`,
+            json: true
+        });
+
+        if (tag == releaseInfo.tag_name)
+        {
+            console.log(chalk.greenBright(`base image ${image}:${chalk.magenta(tag)} is up-to-date`))
+        }
+        else
+        {
+            console.log(chalk.yellowBright(`updating base image from ${image}:${chalk.magenta(tag)} to ${image}:${chalk.magenta(releaseInfo.tag_name)}`));
+            await fs.writeFileAsync(dockerFilePath, dockerFile.replace(`${image}:${tag}`, `${image}:${releaseInfo.tag_name}`));
+            const newVersion = semver.inc(version, "patch");
+            console.log(chalk.yellow(`bumping version from ${chalk.cyanBright(version)} to ${chalk.cyanBright(newVersion)}`));
+            config.version = newVersion;
+            await fs.writeJSONAsync(configPath, config);
+            updated = true;
+        }
+    }
+};
+
+run();