Not able to run docker using IP address - docker

Question

I ran a Docker image. Both the container and host ports are mapped to 5000, and it can be accessed using localhost but not with the IP address. I don't have any knowledge on network systems and I'm a beginner in Docker.
I'm using Docker app for Windows, and upon docker inspect, I got this JSON:
[
{
"Id": "c38f489d712502ce57e5f6b86d8ad1efd3cf64d3c60ab3239bf34a727d0155b7",
"Created": "2020-08-19T18:17:50.917578Z",
"Path": "java",
"Args": [
"-jar",
"/app.jar"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 3142,
"ExitCode": 0,
"Error": "",
"StartedAt": "2020-08-19T18:17:53.0308405Z",
"FinishedAt": "0001-01-01T00:00:00Z"
},
"Image": "sha256:04d86c26964a44e147a0132bc6f6810f5aeba005d655b0d0b86f04499fc6a7a1",
"ResolvConfPath": "/var/lib/docker/containers/c38f489d712502ce57e5f6b86d8ad1efd3cf64d3c60ab3239bf34a727d0155b7/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/c38f489d712502ce57e5f6b86d8ad1efd3cf64d3c60ab3239bf34a727d0155b7/hostname",
"HostsPath": "/var/lib/docker/containers/c38f489d712502ce57e5f6b86d8ad1efd3cf64d3c60ab3239bf34a727d0155b7/hosts",
"LogPath": "/var/lib/docker/containers/c38f489d712502ce57e5f6b86d8ad1efd3cf64d3c60ab3239bf34a727d0155b7/c38f489d712502ce57e5f6b86d8ad1efd3cf64d3c60ab3239bf34a727d0155b7-json.log",
"Name": "/blissful_noether",
"RestartCount": 0,
"Driver": "overlay2",
"Platform": "linux",
"MountLabel": "",
"ProcessLabel": "",
"AppArmorProfile": "",
"ExecIDs": null,
"HostConfig": {
"Binds": null,
"ContainerIDFile": "",
"LogConfig": {
"Type": "json-file",
"Config": {}
},
"NetworkMode": "default",
"PortBindings": {
"5000/tcp": [
{
"HostIp": "",
"HostPort": "5000"
}
]
},
"RestartPolicy": {
"Name": "no",
"MaximumRetryCount": 0
},
"AutoRemove": false,
"VolumeDriver": "",
"VolumesFrom": null,
"CapAdd": null,
"CapDrop": null,
"Dns": [],
"DnsOptions": [],
"DnsSearch": [],
"ExtraHosts": null,
"GroupAdd": null,
"IpcMode": "shareable",
"Cgroup": "",
"Links": null,
"OomScoreAdj": 0,
"PidMode": "",
"Privileged": false,
"PublishAllPorts": false,
"ReadonlyRootfs": false,
"SecurityOpt": null,
"UTSMode": "",
"UsernsMode": "",
"ShmSize": 67108864,
"Runtime": "runc",
"ConsoleSize": [
44,
168
],
"Isolation": "",
"CpuShares": 0,
"Memory": 0,
"NanoCpus": 0,
"CgroupParent": "",
"BlkioWeight": 0,
"BlkioWeightDevice": [],
"BlkioDeviceReadBps": null,
"BlkioDeviceWriteBps": null,
"BlkioDeviceReadIOps": null,
"BlkioDeviceWriteIOps": null,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpuRealtimePeriod": 0,
"CpuRealtimeRuntime": 0,
"CpusetCpus": "",
"CpusetMems": "",
"Devices": [],
"DeviceCgroupRules": null,
"DiskQuota": 0,
"KernelMemory": 0,
"MemoryReservation": 0,
"MemorySwap": 0,
"MemorySwappiness": null,
"OomKillDisable": false,
"PidsLimit": 0,
"Ulimits": null,
"CpuCount": 0,
"CpuPercent": 0,
"IOMaximumIOps": 0,
"IOMaximumBandwidth": 0,
"MaskedPaths": [
"/proc/acpi",
"/proc/kcore",
"/proc/keys",
"/proc/latency_stats",
"/proc/timer_list",
"/proc/timer_stats",
"/proc/sched_debug",
"/proc/scsi",
"/sys/firmware"
],
"ReadonlyPaths": [
"/proc/asound",
"/proc/bus",
"/proc/fs",
"/proc/irq",
"/proc/sys",
"/proc/sysrq-trigger"
]
},
"GraphDriver": {
"Data": {
"LowerDir": "/var/lib/docker/overlay2/49e30cda4983fa70169660522eb0264adb6a86ba7714f051ceb7fe9ba2e6f921-init/diff:/var/lib/docker/overlay2/52cc6d89b46870d8613801fc85cb6f9fa38c0b37b07857de839acd4d001b5530/diff:/var/lib/docker/overlay2/e058a1965c0dff7fbaf1f2fbbe9dbbd491f273d3389c093a3aff1a2c928e305e/diff:/var/lib/docker/overlay2/ea09144ed7206c329c5dac727f9ddd3f346260a59b9e595916f17ee11c3b6d97/diff:/var/lib/docker/overlay2/53820238bb96c5ce804cc77ecbad212bcd3bf6d6a1ca5fdcc3f4d6f4e2349007/diff",
"MergedDir": "/var/lib/docker/overlay2/49e30cda4983fa70169660522eb0264adb6a86ba7714f051ceb7fe9ba2e6f921/merged",
"UpperDir": "/var/lib/docker/overlay2/49e30cda4983fa70169660522eb0264adb6a86ba7714f051ceb7fe9ba2e6f921/diff",
"WorkDir": "/var/lib/docker/overlay2/49e30cda4983fa70169660522eb0264adb6a86ba7714f051ceb7fe9ba2e6f921/work"
},
"Name": "overlay2"
},
"Mounts": [
{
"Type": "volume",
"Name": "df1fe5e69c6437bd3e43d737b5cf7b37f9c1c5325b5505964579fd093ed4beae",
"Source": "/var/lib/docker/volumes/df1fe5e69c6437bd3e43d737b5cf7b37f9c1c5325b5505964579fd093ed4beae/_data",
"Destination": "/tmp",
"Driver": "local",
"Mode": "",
"RW": true,
"Propagation": ""
}
],
"Config": {
"Hostname": "c38f489d7125",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": true,
"AttachStderr": true,
"ExposedPorts": {
"5000/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/lib/jvm/java-1.8-openjdk/jre/bin:/usr/lib/jvm/java-1.8-openjdk/bin",
"LANG=C.UTF-8",
"JAVA_HOME=/usr/lib/jvm/java-1.8-openjdk",
"JAVA_VERSION=8u212",
"JAVA_ALPINE_VERSION=8.212.04-r0"
],
"Cmd": null,
"ArgsEscaped": true,
"Image": "04d86c26964a",
"Volumes": {
"/tmp": {}
},
"WorkingDir": "",
"Entrypoint": [
"java",
"-jar",
"/app.jar"
],
"OnBuild": null,
"Labels": {}
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "fb790b4e2c72fc9b2c9641e1eb91aca5e74759b2ee0265ce5a1907ddb3eb1865",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {
"5000/tcp": [
{
"HostIp": "0.0.0.0",
"HostPort": "5000"
}
]
},
"SandboxKey": "/var/run/docker/netns/fb790b4e2c72",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "0f084ea8ca77ec70d850291644523b81597b761dabe687b4e0035b4ae2e3dd56",
"Gateway": "xxx.xx.x.1",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "xxx.xx.x.x",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"MacAddress": "02:42:bc:19:10:02",
"Networks": {
"bridge": {
"IPAMConfig": null,
"Links": null,
"Aliases": null,
"NetworkID": "51b3be5f2161bb70042d5efd31f5b611cea241248a142f46fa612352c",
"EndpointID": "0f084ea8ca77ec70d850291644523b81597b761dabe687b45b4ae2e3dd56",
"Gateway": "xxx.xx.x.1",
"IPAddress": "xxx.xx.x.2",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:bc:11:00:02",
"DriverOpts": null
}
}
}
}
]
[![ipconfig][1]][1]
I even just came to know that even a Docker container consists of IP. Why is it so? Can anyone help me understand how the container can be accessed with IP?
I have tried with all the IPs available in the JSON above and ipconfig image, but it does not work.

Answer 1

Yes, Docker containers have their Unique IP address(more in Kubernetes).
https://stackoverflow.com/a/43694284/9650284
refer this for an explanation(comments on the solutions). TLDR it is not possible to access the internal IP of the docker container from your host.