问题
I am trying to build an image using docker windows container. Here is my dockerfile
FROM mcr.microsoft.com/windows/servercore:ltsc2019 as installer
RUN Invoke-WebRequest -URI 'www.google.com'
When I run this it is failing to connect to google.com
Invoke-WebRequest : The remote name could not be resolved: 'www.google.com'
At line:1 char:73
I am working on a corporate network and I tried setting proxy using
RUN netsh winhttp set proxy proxy-server="http://proxy.com:80" bypass-list="*.xyz.com"
and also imported the registry HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
ipconfig /all inside my container gives below result
Windows IP Configuration
Host Name . . . . . . . . . . . . : 0d5119fe9ce4
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Hyper-V Network Adapter
Physical Address. . . . . . . . . : 00-15-5D-B4-55-54
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fd80::a1f4:ab74:983:af83%4(Preferred)
IPv4 Address. . . . . . . . . . . : 172.xxx.xxx.xx(Preferred)
Subnet Mask . . . . . . . . . . . : 255.xxx.xxx.xx
Default Gateway . . . . . . . . . : 172.xxx.xxx.xx
DHCPv6 IAID . . . . . . . . . . . : 67114333
DHCPv6 Client DUID. . . . . . . . : 00-01-40-01-25-D1-CB-C4-00-15-5D-D4-A5-54
DNS Servers . . . . . . . . . . . : 172.xxx.xxx.xx
10.xxx.xxx.xx
NetBIOS over Tcpip. . . . . . . . : Disabled
I suspect there is some dns/firewall issue or not setting proxy in a correct way. Can someone help me in identifying the root cause and fixing this issue.
回答1:
I have had the same problem and was able to resolve it setting the DNS.
If you are making the call during build time you can set it in your docker daemon. In Docker Desktop go to "Settings" > "Docker Engine" and add the following to the JSON config:
"dns": ["1.1.1.1"]
https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-dns-options
If you are experiencing the problem during run time you can add the dns argument
--dns 1.1.1.1
https://docs.docker.com/engine/reference/run/#network-settings
来源:https://stackoverflow.com/questions/59766135/not-able-to-access-internet-inside-docker-windows-container