SSH身份验证失败：权限被拒绝（publickey）

Question

我有一个特定的背景。我想把Jenkins绑定到Git。 Jenkins在Tomcat上运行，我使用Docker容器来运行Git Server（https://hub.docker.com/r/unixtastic/git-ssh-server）

问题是Jenkins无法连接到Git。所以，为了确定故障排除，我首先尝试在命令行中连接到Git Server throw ssh：

$ ssh git@172.17.0.2

连接成功，我可以登录到Git Server。但它与登录/密码有关。但我想用公钥来做。

因此，当我在Git Server sshd_config文件中禁用登录/密码登录时，现在登录失败，除非我认为我的配置是正确的：

1. 我用ssh-keygen创建了一对密钥。此密钥位于客户端/home/git/.ssh
中
2. 我在Git用户的主目录下复制了Git Server上的公钥：/git/.ssh/authorized_keys
3. 尝试登录
后，服务器公钥在客户端用户的known_hosts文件中很好地复制

但不幸的是，登录失败并显示完整的消息：

OpenSSH_7.2p2 Ubuntu-4ubuntu1, OpenSSL 1.0.2g-fips  1 Mar 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 172.17.0.2 [172.17.0.2] port 22.
debug1: Connection established.
debug1: identity file /home/git/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/git/.ssh/id_rsa-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu1
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.7
debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.7 pat OpenSSH_6.6.1* compat 0x04000000
debug1: Authenticating to 172.17.0.2:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: ssh-rsa
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ssh-rsa SHA256:103879AadyMX3oJAuSWHR74aQhBaZIg3yb95v6/FyeI
debug1: Host '172.17.0.2' is known and matches the RSA host key.
debug1: Found key in /home/git/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/git/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).