I'm running a docker container and want to ssh to it using emacs' tramp package. I can use docker exec -it containername bash successfully. But I just want to use my emacs to do configure work. I've already exposed containers' port 22 to localhost port 22.
By the way, I do have id_rsa in my .ssh folder.
However, even I use ssh -p 22 dwolf@localhost it still doesn't work. The log is as following:
OpenSSH_7.4p1, LibreSSL 2.5.0
debug1: Reading configuration data /Users/spacegoing/.ssh/config
debug1: /Users/spacegoing/.ssh/config line 26: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to localhost [::1] port 22.
debug1: connect to address ::1 port 22: Connection refused
debug1: Connecting to localhost [127.0.0.1] port 22.
debug1: Connection established.
debug1: identity file /Users/spacegoing/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/spacegoing/.ssh/id_rsa-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.4
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.0p1 Debian-4+deb7u3
debug1: match: OpenSSH_6.0p1 Debian-4+deb7u3 pat OpenSSH* compat 0x04000000
debug1: Authenticating to localhost:22 as 'dwolf'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: ecdh-sha2-nistp256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: aes128-ctr MAC: umac-64@openssh.com compression: none
debug1: kex: client->server cipher: aes128-ctr MAC: umac-64@openssh.com compression: none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:w7Y3BsQ1xof3U5cohsL5y9ctWvgNaTuXdbDFwQtE+Gc
debug1: Host 'localhost' is known and matches the ECDSA host key.
debug1: Found key in /Users/spacegoing/.ssh/known_hosts:26
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /Users/spacegoing/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).