再構築に失敗しました: ファイルが見つかりません /usr/local/etc/ImageMagick-6/policy.xml

Hi,

I tried to update discourse with ./launcher rebuild app refer from How do I manually update Discourse and Docker image to latest?
But I got failure about ENOENT.

I did below commands to improve this situation.
dpkg-reconfigure -plow unattended-upgrades

apt-get update
apt-get dist-upgrade

wget -qO- https://get.docker.com/ | sh

But the error remained.
I can’t solve it. :sob:

Logs is here.

dstest:/var/discourse$ sudo ./launcher rebuild app
Ensuring launcher is up to date
Fetching origin
Launcher is up-to-date
Stopping old container
+ /usr/bin/docker stop -t 60 app
app
cd /pups && git pull && /pups/bin/pups --stdin
Already up to date.
I, [2020-11-13T07:34:54.569773 #1]  INFO -- : Loading --stdin
I, [2020-11-13T07:34:54.576058 #1]  INFO -- : > locale-gen $LANG && update-locale
I, [2020-11-13T07:34:54.676810 #1]  INFO -- : Generating locales (this might take a while)...
Generation complete.

I, [2020-11-13T07:34:54.677475 #1]  INFO -- : > mkdir -p /shared/postgres_run
I, [2020-11-13T07:34:54.702215 #1]  INFO -- : 
I, [2020-11-13T07:34:54.703054 #1]  INFO -- : > chown postgres:postgres /shared/postgres_run
I, [2020-11-13T07:34:54.712895 #1]  INFO -- : 
I, [2020-11-13T07:34:54.713681 #1]  INFO -- : > chmod 775 /shared/postgres_run
I, [2020-11-13T07:34:54.717105 #1]  INFO -- : 
I, [2020-11-13T07:34:54.717680 #1]  INFO -- : > rm -fr /var/run/postgresql
I, [2020-11-13T07:34:54.719943 #1]  INFO -- : 
I, [2020-11-13T07:34:54.720466 #1]  INFO -- : > ln -s /shared/postgres_run /var/run/postgresql
I, [2020-11-13T07:34:54.723863 #1]  INFO -- : 
I, [2020-11-13T07:34:54.724449 #1]  INFO -- : > socat /dev/null UNIX-CONNECT:/shared/postgres_run/.s.PGSQL.5432 || exit 0 && echo postgres already running stop container ; exit 1
2020/11/13 07:34:54 socat[27] E connect(6, AF=1 "/shared/postgres_run/.s.PGSQL.5432", 36): No such file or directory
I, [2020-11-13T07:34:54.791451 #1]  INFO -- : 
I, [2020-11-13T07:34:54.791940 #1]  INFO -- : > rm -fr /shared/postgres_run/.s*
I, [2020-11-13T07:34:54.795116 #1]  INFO -- : 
I, [2020-11-13T07:34:54.795545 #1]  INFO -- : > rm -fr /shared/postgres_run/*.pid
I, [2020-11-13T07:34:54.798154 #1]  INFO -- : 
I, [2020-11-13T07:34:54.798578 #1]  INFO -- : > mkdir -p /shared/postgres_run/12-main.pg_stat_tmp
I, [2020-11-13T07:34:54.800772 #1]  INFO -- : 
I, [2020-11-13T07:34:54.801357 #1]  INFO -- : > chown postgres:postgres /shared/postgres_run/12-main.pg_stat_tmp
I, [2020-11-13T07:34:54.803400 #1]  INFO -- : 
I, [2020-11-13T07:34:54.807557 #1]  INFO -- : File > /etc/service/postgres/run  chmod: +x  chown: 
I, [2020-11-13T07:34:54.811426 #1]  INFO -- : File > /etc/service/postgres/log/run  chmod: +x  chown: 
I, [2020-11-13T07:34:54.815457 #1]  INFO -- : File > /etc/runit/3.d/99-postgres  chmod: +x  chown: 
I, [2020-11-13T07:34:54.819414 #1]  INFO -- : File > /root/upgrade_postgres  chmod: +x  chown: 
I, [2020-11-13T07:34:54.820021 #1]  INFO -- : > chown -R root /var/lib/postgresql/12/main
I, [2020-11-13T07:34:58.099992 #1]  INFO -- : 
I, [2020-11-13T07:34:58.100865 #1]  INFO -- : > [ ! -e /shared/postgres_data ] && install -d -m 0755 -o postgres -g postgres /shared/postgres_data && sudo -E -u postgres /usr/lib/postgresql/12/bin/initdb -D /shared/postgres_data || exit 0
I, [2020-11-13T07:34:58.103259 #1]  INFO -- : 
I, [2020-11-13T07:34:58.103633 #1]  INFO -- : > chown -R postgres:postgres /shared/postgres_data
I, [2020-11-13T07:34:58.125185 #1]  INFO -- : 
I, [2020-11-13T07:34:58.125939 #1]  INFO -- : > chown -R postgres:postgres /var/run/postgresql
I, [2020-11-13T07:34:58.128600 #1]  INFO -- : 
I, [2020-11-13T07:34:58.129158 #1]  INFO -- : > /root/upgrade_postgres
I, [2020-11-13T07:34:58.133295 #1]  INFO -- : 
I, [2020-11-13T07:34:58.133708 #1]  INFO -- : > rm /root/upgrade_postgres
I, [2020-11-13T07:34:58.135503 #1]  INFO -- : 
I, [2020-11-13T07:34:58.136036 #1]  INFO -- : Replacing data_directory = '/var/lib/postgresql/12/main' with data_directory = '/shared/postgres_data' in /etc/postgresql/12/main/postgresql.conf
I, [2020-11-13T07:34:58.136723 #1]  INFO -- : Replacing (?-mix:#?listen_addresses *=.*) with listen_addresses = '*' in /etc/postgresql/12/main/postgresql.conf
I, [2020-11-13T07:34:58.137998 #1]  INFO -- : Replacing (?-mix:#?synchronous_commit *=.*) with synchronous_commit = $db_synchronous_commit in /etc/postgresql/12/main/postgresql.conf
I, [2020-11-13T07:34:58.138960 #1]  INFO -- : Replacing (?-mix:#?shared_buffers *=.*) with shared_buffers = $db_shared_buffers in /etc/postgresql/12/main/postgresql.conf
I, [2020-11-13T07:34:58.139939 #1]  INFO -- : Replacing (?-mix:#?work_mem *=.*) with work_mem = $db_work_mem in /etc/postgresql/12/main/postgresql.conf
I, [2020-11-13T07:34:58.140867 #1]  INFO -- : Replacing (?-mix:#?default_text_search_config *=.*) with default_text_search_config = '$db_default_text_search_config' i
 /etc/postgresql/12/main/postgresql.conf
I, [2020-11-13T07:34:58.141833 #1]  INFO -- : > install -d -m 0755 -o postgres -g postgres /shared/postgres_backup
I, [2020-11-13T07:34:58.144916 #1]  INFO -- : 
I, [2020-11-13T07:34:58.145559 #1]  INFO -- : Replacing (?-mix:#?checkpoint_segments *=.*) with checkpoint_segments = $db_checkpoint_segments in /etc/postgresql/12/main/postgresql.conf
I, [2020-11-13T07:34:58.146076 #1]  INFO -- : Replacing (?-mix:#?logging_collector *=.*) with logging_collector = $db_logging_collector in /etc/postgresql/12/main/postgresql.conf
I, [2020-11-13T07:34:58.147118 #1]  INFO -- : Replacing (?-mix:#?log_min_duration_statement *=.*) with log_min_duration_statement = $db_log_min_duration_statement in /etc/postgresql/12/main/postgresql.conf
I, [2020-11-13T07:34:58.162784 #1]  INFO -- : Replacing (?-mix:^#local +replication +postgres +peer$) with local replication postgres  peer in /etc/postgresql/12/main/pg_hba.conf
I, [2020-11-13T07:34:58.163691 #1]  INFO -- : Replacing (?-mix:^host.*all.*all.*127.*$) with host all all 0.0.0.0/0 md5 in /etc/postgresql/12/main/pg_hba.conf
I, [2020-11-13T07:34:58.164784 #1]  INFO -- : > HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/postgresql/12/bin/postmaster -D /etc/postgresql/12/main
I, [2020-11-13T07:34:58.166947 #1]  INFO -- : > sleep 5
2020-11-13 07:34:58.208 UTC [50] LOG:  starting PostgreSQL 12.4 (Debian 12.4-1.pgdg100+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 8.3.0-6) 8.3.0, 64-bit
2020-11-13 07:34:58.208 UTC [50] LOG:  listening on IPv4 address "0.0.0.0", port 5432
2020-11-13 07:34:58.209 UTC [50] LOG:  listening on IPv6 address "::", port 5432
2020-11-13 07:34:58.218 UTC [50] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
2020-11-13 07:34:58.302 UTC [53] LOG:  database system was shut down at 2020-11-13 07:23:18 UTC
2020-11-13 07:34:58.321 UTC [50] LOG:  database system is ready to accept connections
I, [2020-11-13T07:35:03.209924 #1]  INFO -- : 
I, [2020-11-13T07:35:03.222141 #1]  INFO -- : > su postgres -c 'createdb discourse' || true
2020-11-13 07:35:03.575 UTC [63] postgres@postgres ERROR:  database "discourse" already exists
2020-11-13 07:35:03.575 UTC [63] postgres@postgres STATEMENT:  CREATE DATABASE discourse;
createdb: error: database creation failed: ERROR:  database "discourse" already exists
I, [2020-11-13T07:35:03.578465 #1]  INFO -- : 
I, [2020-11-13T07:35:03.578976 #1]  INFO -- : > su postgres -c 'psql discourse -c "create user discourse;"' || true
2020-11-13 07:35:03.644 UTC [74] postgres@discourse ERROR:  role "discourse" already exists
2020-11-13 07:35:03.644 UTC [74] postgres@discourse STATEMENT:  create user discourse;
ERROR:  role "discourse" already exists
I, [2020-11-13T07:35:03.646897 #1]  INFO -- : 
I, [2020-11-13T07:35:03.647407 #1]  INFO -- : > su postgres -c 'psql discourse -c "grant all privileges on database discourse to discourse;"' || true
I, [2020-11-13T07:35:03.711432 #1]  INFO -- : GRANT

I, [2020-11-13T07:35:03.712171 #1]  INFO -- : > su postgres -c 'psql discourse -c "alter schema public owner to discourse;"'
I, [2020-11-13T07:35:03.782199 #1]  INFO -- : ALTER SCHEMA

I, [2020-11-13T07:35:03.782901 #1]  INFO -- : > su postgres -c 'psql template1 -c "create extension if not exists hstore;"'
NOTICE:  extension "hstore" already exists, skipping
I, [2020-11-13T07:35:03.847761 #1]  INFO -- : CREATE EXTENSION

I, [2020-11-13T07:35:03.848327 #1]  INFO -- : > su postgres -c 'psql template1 -c "create extension if not exists pg_trgm;"'
NOTICE:  extension "pg_trgm" already exists, skipping
I, [2020-11-13T07:35:03.909805 #1]  INFO -- : CREATE EXTENSION

I, [2020-11-13T07:35:03.910376 #1]  INFO -- : > su postgres -c 'psql discourse -c "create extension if not exists hstore;"'
NOTICE:  extension "hstore" already exists, skipping
I, [2020-11-13T07:35:03.972494 #1]  INFO -- : CREATE EXTENSION

I, [2020-11-13T07:35:03.973165 #1]  INFO -- : > su postgres -c 'psql discourse -c "create extension if not exists pg_trgm;"'
NOTICE:  extension "pg_trgm" already exists, skipping
I, [2020-11-13T07:35:04.035738 #1]  INFO -- : CREATE EXTENSION

I, [2020-11-13T07:35:04.036418 #1]  INFO -- : > sudo -u postgres psql discourse
I, [2020-11-13T07:35:04.055691 #1]  INFO -- : update pg_database set encoding = pg_char_to_encoding('UTF8') where datname = 'discourse' AND encoding = pg_char_to_encoding('SQL_ASCII');

I, [2020-11-13T07:35:04.147941 #1]  INFO -- : File > /var/lib/postgresql/take-database-backup  chmod: +x  chown: postgres:postgres
I, [2020-11-13T07:35:04.150956 #1]  INFO -- : File > /var/spool/cron/crontabs/postgres  chmod:   chown: 
I, [2020-11-13T07:35:04.151502 #1]  INFO -- : > echo postgres installed!
I, [2020-11-13T07:35:04.167002 #1]  INFO -- : postgres installed!

I, [2020-11-13T07:35:04.172330 #1]  INFO -- : File > /etc/service/redis/run  chmod: +x  chown: 
I, [2020-11-13T07:35:04.176723 #1]  INFO -- : File > /etc/service/redis/log/run  chmod: +x  chown: 
I, [2020-11-13T07:35:04.181121 #1]  INFO -- : File > /etc/runit/3.d/10-redis  chmod: +x  chown: 
I, [2020-11-13T07:35:04.182910 #1]  INFO -- : Replacing daemonize yes with  in /etc/redis/redis.conf
I, [2020-11-13T07:35:04.183837 #1]  INFO -- : Replacing (?-mix:^pidfile.*$) with  in /etc/redis/redis.conf
I, [2020-11-13T07:35:04.185609 #1]  INFO -- : > install -d -m 0755 -o redis -g redis /shared/redis_data
I, [2020-11-13T07:35:04.225330 #1]  INFO -- : 
I, [2020-11-13T07:35:04.226369 #1]  INFO -- : Replacing (?-mix:^logfile.*$) with logfile "" in /etc/redis/redis.conf
I, [2020-11-13T07:35:04.227109 #1]  INFO -- : Replacing (?-mix:^bind .*$) with  in /etc/redis/redis.conf
I, [2020-11-13T07:35:04.229259 #1]  INFO -- : Replacing (?-mix:^dir .*$) with dir /shared/redis_data in /etc/redis/redis.conf
I, [2020-11-13T07:35:04.230796 #1]  INFO -- : Replacing (?-mix:^protected-mode yes) with protected-mode no in /etc/redis/redis.conf
I, [2020-11-13T07:35:04.232306 #1]  INFO -- : Replacing # io-threads 4 with io-threads $redis_io_threads in /etc/redis/redis.conf
I, [2020-11-13T07:35:04.233981 #1]  INFO -- : > echo redis installed
I, [2020-11-13T07:35:04.236684 #1]  INFO -- : redis installed

I, [2020-11-13T07:35:04.237270 #1]  INFO -- : > cat /etc/redis/redis.conf | grep logfile
I, [2020-11-13T07:35:04.263966 #1]  INFO -- : logfile ""

I, [2020-11-13T07:35:04.264740 #1]  INFO -- : > exec chpst -u redis -U redis /usr/bin/redis-server /etc/redis/redis.conf
I, [2020-11-13T07:35:04.266909 #1]  INFO -- : > sleep 10
167:C 13 Nov 2020 07:35:04.374 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
167:C 13 Nov 2020 07:35:04.375 # Redis version=5.0.9, bits=64, commit=00000000, modified=0, pid=167, just started
167:C 13 Nov 2020 07:35:04.375 # Configuration loaded
                _._                                                  
           _.-``__ ''-._                                             
      _.-``    `.  `_.  ''-._           Redis 5.0.9 (00000000/0) 64 bit
  .-`` .-```.  ```\/    _.,_ ''-._                                   
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 167
  `-._    `-._  `-./  _.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |           http://redis.io        
  `-._    `-._`-.__.-'_.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |                                  
  `-._    `-._`-.__.-'_.-'    _.-'                                   
      `-._    `-.__.-'    _.-'                                       
          `-._        _.-'                                           
              `-.__.-'                                               

167:M 13 Nov 2020 07:35:04.379 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
167:M 13 Nov 2020 07:35:04.379 # Server initialized
167:M 13 Nov 2020 07:35:04.379 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
167:M 13 Nov 2020 07:35:04.498 * DB loaded from disk: 0.118 seconds
167:M 13 Nov 2020 07:35:04.498 * Ready to accept connections
I, [2020-11-13T07:35:14.270726 #1]  INFO -- : 
I, [2020-11-13T07:35:14.271660 #1]  INFO -- : Terminating async processes
I, [2020-11-13T07:35:14.271971 #1]  INFO -- : Sending INT to HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/postgresql/12/bin/postmaster -D /etc/postgresql/12/main pid: 50
I, [2020-11-13T07:35:14.272236 #1]  INFO -- : Sending TERM to exec chpst -u redis -U redis /usr/bin/redis-server /etc/redis/redis.conf pid: 167
2020-11-13 07:35:14.272 UTC [50] LOG:  received fast shutdown request
167:signal-handler (1605252914) Received SIGTERM scheduling shutdown...
2020-11-13 07:35:14.276 UTC [50] LOG:  aborting any active transactions
2020-11-13 07:35:14.278 UTC [50] LOG:  background worker "logical replication launcher" (PID 59) exited with exit code 1
2020-11-13 07:35:14.283 UTC [54] LOG:  shutting down
2020-11-13 07:35:14.312 UTC [50] LOG:  database system is shut down
167:M 13 Nov 2020 07:35:14.331 # User requested shutdown...
167:M 13 Nov 2020 07:35:14.331 * Saving the final RDB snapshot before exiting.
167:M 13 Nov 2020 07:35:14.369 * DB saved on disk
167:M 13 Nov 2020 07:35:14.370 # Redis is now ready to exit, bye bye...

FAILED
--------------------
Errno::ENOENT: No such file or directory @ rb_sysopen - /usr/local/etc/ImageMagick-6/policy.xml
Location of failure: /pups/lib/pups/replace_command.rb:8:in `read'
replace failed with the params {"filename"=>"/usr/local/etc/ImageMagick-6/policy.xml", "from"=>"<policymap>", "to"=>"<policymap>\n  <policy domain=\"coder\" rights=\"none\" pattern=\"EPHEMERAL\" />\n  <policy domain=\"coder\" rights=\"none\" pattern=\"URL\" />\n  <policy domain=\"coder\" rights=\"none\" pattern=\"HTTPS\" />\n  <policy domain=\"coder\" rights=\"none\" pattern=\"MVG\" />\n  <policy domain=\"coder\" rights=\"none\" pattern=\"MSL\" />\n  <policy domain=\"coder\" rights=\"none\" pattern=\"TEXT\" />\n  <policy domain=\"coder\" rights=\"none\" pattern=\"SHOW\" />\n  <policy domain=\"coder\" rights=\"none\" pattern=\"WIN\" />\n  <policy domain=\"coder\" rights=\"none\" pattern=\"PLT\" />\n"}
8a2b7a84ea2ce73e8438d1a8ba1209227b633c0797880d18ca3b5e49d60f1007
** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one.
./discourse-doctor may help diagnose the problem.

app.yml ファイルをここに共有できますか?内容を貼り付けた後は、パスワードを伏せるのを忘れないでください。

ご返信ありがとうございます。

いくつかの単語を置き換えた app.yml です。

# これはオールインワン、スタンドアロンの Discourse Docker コンテナテンプレートです
##
## このファイルを変更した後は、必ず再構築が必要です
## /var/discourse/launcher rebuild app
##
## 編集時は *非常に* 注意してください!
## YAML ファイルは、空白やアライメントの誤りに非常に、非常に敏感です!
## 必要に応じて http://www.yamllint.com/ を訪れてこのファイルを検証してください

templates:
  - "templates/postgres.template.yml"
  - "templates/redis.template.yml"
  - "templates/web.template.custom.yml"
  - "templates/web.ratelimited.template.yml"
## Lets Encrypt (https) を追加したい場合は、以下の 2 行のコメントを外してください
  - "templates/web.ssl.template.yml"
  - "templates/web.letsencrypt.ssl.template.yml"

## このコンテナが公開すべき TCP/IP ポートはどれですか?
## Discourse を Apache や nginx などの他の Web サーバーとポートを共有したい場合は、
## https://meta.discourse.org/t/17247 を参照してください
expose:
  - "80:80"   # http
  - "443:443" # https

params:
  db_default_text_search_config: "pg_catalog.english"

  ## db_shared_buffers を総メモリの最大 25% に設定します。
  ## 検出された RAM に基づいてブートストラップによって自動的に設定されますが、上書きすることも可能です
  db_shared_buffers: "768MB"

  ## ソートパフォーマンスを向上させる可能性がありますが、接続ごとのメモリ使用量が増加します
  #db_work_mem: "40MB"

  ## このコンテナが使用する Git リビジョンはどれですか?(デフォルト: tests-passed)
  version: stable

env:
  LANG: en_US.UTF-8
  # DISCOURSE_DEFAULT_LOCALE: en

  ## 同時にサポートされる Web リクエスト数は?メモリと CPU コア数に依存します。
  ## 検出された CPU に基づいてブートストラップによって自動的に設定されますが、上書きすることも可能です
  UNICORN_WORKERS: 2

  ## TODO: この Discourse インスタンスが応答するドメイン名
  DISCOURSE_HOSTNAME: bbs.tmp_name.jp

  ## コンテナを上記で指定した同じホスト名 (-h オプション) で起動したい場合は、コメントを外してください
  ## (デフォルト: "$hostname-$config")
  #DOCKER_USE_HOSTNAME: true

  ## TODO: 初期登録時に管理者および開発者として設定されるカンマ区切りのメールリスト
  ## 例: 'user1@example.com,user2@example.com'
  DISCOURSE_DEVELOPER_EMAILS: 'tmp_name@gmail.com'

  ## TODO: 新しいアカウントの検証と通知の送信に使用する SMTP メールサーバー
  DISCOURSE_SMTP_ADDRESS: smtp.sendgrid.net
  DISCOURSE_SMTP_PORT: 2525
  DISCOURSE_SMTP_USER_NAME: tmp_name
  DISCOURSE_SMTP_PASSWORD: "*********"
  #DISCOURSE_SMTP_ENABLE_START_TLS: true           # (オプション、デフォルトは true)

  ## Lets Encrypt テンプレートを追加した場合、以下のコメントを外して無料の SSL 証明書を取得してください
  LETSENCRYPT_ACCOUNT_EMAIL: tmp_name@gmail.com

  ## この Discourse インスタンスの CDN アドレス(プルするように設定)
  ## 詳細は https://meta.discourse.org/t/14857 を参照してください
  #DISCOURSE_CDN_URL: //discourse-cdn.example.com

## Docker コンテナはステートレスです。すべてのデータは /shared に保存されます
volumes:
  - volume:
      host: /var/discourse/shared/standalone
      guest: /shared
  - volume:
      host: /var/discourse/shared/standalone/log/var-log
      guest: /var/log

## プラグインはここに追加します
## 詳細は https://meta.discourse.org/t/19157 を参照してください
hooks:
  after_code:
    - exec:
        cd: $home/plugins
        cmd:
          - git clone https://github.com/discourse/docker_manager.git

## ビルド後に実行する任意のカスタムコマンド
run:
  - exec: echo "カスタムコマンドの開始"
  ## 最初の登録用の 'From' メールアドレスを設定したい場合は、以下のコメントを外して変更してください
  ## 最初の登録メールを受信した後、再度コメントアウトしてください。一度だけ実行すれば十分です
  #- exec: rails r "SiteSetting.notification_email='info@unconfigured.discourse.org'"
  - exec: echo "カスタムコマンドの終了"

@jamie.wilson さんの調査によると、インストールスクリプトのバージョンが古くなっているようです。以下のコマンドを実行してみてください。

cd /var/discourse
git pull
./launcher rebuild app

現時点ではこのコマンドも失敗しますが、これは現在追跡している別の stable の非互換性によるものです。更新が必要な場合は stable のロックを解除してください。現在、stable は機能せず、また頻繁にテストされていないためです。