Use restified postgresql addon

src/platform.js

@@ -210,12 +210,9 @@ function startPostgresql(callback) {
     const tag = infra.images.postgresql.tag;
     const dataDir = paths.PLATFORM_DATA_DIR;
     const rootPassword = hat(8 * 128);
+    const cloudronToken = hat(8 * 128);
     const memoryLimit = (1 + Math.round(os.totalmem()/(1024*1024*1024)/4)) * 256;
 
-    if (!safe.fs.writeFileSync(paths.ADDON_CONFIG_DIR + '/postgresql_vars.sh', 'POSTGRESQL_ROOT_PASSWORD=' + rootPassword, 'utf8')) {
-        return callback(new Error('Could not create postgresql var file:' + safe.error.message));
-    }
-
     const cmd = `docker run --restart=always -d --name="postgresql" \
                 --net cloudron \
                 --net-alias postgresql \
@@ -227,8 +224,9 @@ function startPostgresql(callback) {
                 --memory-swap ${memoryLimit * 2}m \
                 --dns 172.18.0.1 \
                 --dns-search=. \
+                -e POSTGRESQL_ROOT_PASSWORD="${rootPassword}" \
+                -e CLOUDRON_POSTGRESQL_TOKEN="${cloudronToken}" \
                 -v "${dataDir}/postgresql:/var/lib/postgresql" \
-                -v "${dataDir}/addons/postgresql_vars.sh:/etc/postgresql/postgresql_vars.sh:ro" \
                 --read-only -v /tmp -v /run "${tag}"`;
 
     shell.execSync('startPostgresql', cmd);