使用以下 Dockerfile：
FROM nexylan/php-dev:7.1-alpine
COPY entrypoint.sh /
RUN chmod u+x /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]
WORKDIR /code
CMD ["tail", "-f", "/dev/null"]
（入口点不执行与该问题相关的任何操作）。
以及 docker-compose 上的定义：
version: '2'
services:
data:
image: alpine
volumes:
- .:/code
console:
build: docker/php-console
volumes_from:
- data
env_file:
- .env
如果我在本地 Ubuntu 计算机上运行：
docker-compose up -d
docker-compose exec -T console ssh -o StrictHostKeyChecking=no -i tests/fixtures/ssh/key -T [email protected]
它将与以下消息一起使用：
Hi xXx! You've successfully authenticated, but GitHub does not provide shell access.
但在我的 GitLab CI 运行器实例上则不然，配置如下：
image: docker
services:
- docker:dind
before_script:
- docker info
- apk add --update bash python py-pip python-dev
- pip install docker-compose
- ./configure
- docker-compose up -d
- docker-compose ps
- docker-compose exec -T console make install
stages:
- test
test:
stage: test
tags: [docker-privileged]
script:
- echo ${SSH_PRIVATE_KEY} > tests/fixtures/ssh/key
- echo ${SSH_PUBLIC_KEY} > tests/fixtures/ssh/key.pub
- chmod 600 tests/fixtures/ssh/*
- docker-compose exec -T console ls -l tests/fixtures/ssh/
- docker-compose exec -T console ssh -o StrictHostKeyChecking=no -i tests/fixtures/ssh/key -T -vvv [email protected]
密钥在这里并且与我本地的完全相同，但是命令无法连接，-vvv日志结果如下：
OpenSSH_7.2p2-hpn14v4, OpenSSL 1.0.2k 26 Jan 2017
debug1: Reading configuration data /etc/ssh/ssh_config
debug2: resolving "github.com" port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to github.com [192.30.253.112] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file tests/fixtures/ssh/key type 1
debug1: key_load_public: No such file or directory
debug1: identity file tests/fixtures/ssh/key-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2-hpn14v4
debug1: Remote protocol version 2.0, remote software version libssh_0.7.0
debug1: no match: libssh_0.7.0
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to github.com:22 as 'git'
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: [email protected],[email protected],[email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected],zlib
debug2: compression stoc: none,[email protected],zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: host key algorithms: ssh-dss,ssh-rsa
debug2: ciphers ctos: [email protected],aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,blowfish-cbc
debug2: ciphers stoc: [email protected],aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,blowfish-cbc
debug2: MACs ctos: hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,zlib,[email protected]
debug2: compression stoc: none,zlib,[email protected]
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: [email protected]
debug1: kex: host key algorithm: ssh-rsa
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ssh-rsa SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8
Warning: Permanently added 'github.com,192.30.253.112' (RSA) to the list of known hosts.
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug2: set_newkeys: mode 0
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug2: key: tests/fixtures/ssh/key (0x56053d865c20), explicit
debug3: send packet: type 5
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey
debug3: start over, passed a different list publickey
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: tests/fixtures/ssh/key
debug3: send_pubkey_test
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 60
debug1: Server accepts key: pkalg ssh-rsa blen 279
debug2: input_userauth_pk_ok: fp SHA256:3aoR/R1oBDYb0QucuGCJfBgIWW4DE2P4DjuWwgtQg/k
debug3: sign_and_send_pubkey: RSA SHA256:3aoR/R1oBDYb0QucuGCJfBgIWW4DE2P4DjuWwgtQg/k
debug1: read_passphrase: can't open /dev/tty: No such device or address
debug2: no passphrase given, try next key
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (publickey).
我已经尝试过了这个解决方案问题/dev/tty，但没有成功！
另外，既然是Docker镜像，环境应该是一样的，不是吗？为什么这可以在我的本地计算机上运行，而不能在 GitLab CI 运行器上运行？
答案1
在您的 ubuntu 上，您可能已作为本地 tty 连接，而 GitLab CI docker 没有 tty，正如错误所暗示的那样。
当你使用命令时
docker-compose exec -T
这将禁用 ptty 的分配，因此 openssh 找不到用于收集键盘交互密码输入的 tty。https://docs.docker.com/compose/reference/exec/ 服务器在握手期间请求了此操作，因此 ssh 客户端将尝试执行此操作。
因为未使用 -d 选项，所以此命令将使用现有的 tty（如果有一个解释了为什么它可以在本地 Ubuntu 计算机上运行，其中可能会自动创建 tty）。