I am running this command to extract some entries from docker output:

out=$(sudo docker inspect fabric-lifecycle);echo $out | sed -n 's/.*"Id": "(.*)", "Created".*"Status": "(.*)", "Running".*"Pid": (.*),.*"ExitCode": (.*), "Error".*"Name": "/(.*)", "RestartCount".*"Privileged": (.*), "PublishAllPorts".*"Cmd": (.*), "Image": "(.*)", "Volumes".*/1;2;3;4;5;6;7;8/p'

I would like to include the "Memory" entry in the output too, so that the complete output is

e5330efcb429bab6bb31571fb878d0cd3a7078c537bd9606360a05886e55f72e;running;95168;0;fabric-lifecycle;false;[ "lifecycle" ];caspian/fabric:3.3.0.0-3594.2b8e92d;1073741824

Here is the full value of $out:

[
 
 "Id": "e5330efcb429bab6bb31571fb878d0cd3a7078c537bd9606360a05886e55f72e",
 "Created": "2018-10-01T05:34:37.972705474Z",
 "Path": "./boot.sh",
 "Args": [
 "lifecycle"
 ],
 "State": 
 "Status": "running",
 "Running": true,
 "Paused": false,
 "Restarting": false,
 "OOMKilled": false,
 "Dead": false,
 "Pid": 95168,
 "ExitCode": 0,
 "Error": "",
 "StartedAt": "2018-10-01T05:34:51.739952918Z",
 "FinishedAt": "2018-10-01T05:34:46.361850627Z"
 ,
 "Image": "sha256:328eab472dbd625983c23f8760bc3d0b595dd161ee0d12e1d6d53c8b70228fd1",
 "ResolvConfPath": "/var/lib/docker/containers/e5330efcb429bab6bb31571fb878d0cd3a7078c537bd9606360a05886e55f72e/resolv.conf",
 "HostnamePath": "/var/lib/docker/containers/e5330efcb429bab6bb31571fb878d0cd3a7078c537bd9606360a05886e55f72e/hostname",
 "HostsPath": "/var/lib/docker/containers/e5330efcb429bab6bb31571fb878d0cd3a7078c537bd9606360a05886e55f72e/hosts",
 "LogPath": "/var/lib/docker/containers/e5330efcb429bab6bb31571fb878d0cd3a7078c537bd9606360a05886e55f72e/e5330efcb429bab6bb31571fb878d0cd3a7078c537bd9606360a05886e55f72e-json.log",
 "Name": "/fabric-lifecycle",
 "RestartCount": 0,
 "Driver": "devicemapper",
 "Platform": "linux",
 "MountLabel": "",
 "ProcessLabel": "",
 "AppArmorProfile": "docker-default",
 "ExecIDs": null,
 "HostConfig": 
 "Binds": [
 "/opt/emc/caspian/fabric/agent/services/fabric/data:/data:rw",
 "/opt/emc/caspian/fabric/agent/services/fabric/lifecycle/log:/var/log:rw",
 "/opt/emc/caspian/fabric/agent/services/fabric/lifecycle/host/data:/host/data:ro",
 "/opt/emc/caspian/fabric/agent/services/fabric/lifecycle/host/files:/host/files:ro"
 ],
 "ContainerIDFile": "",
 "LogConfig": 
 "Type": "json-file",
 "Config": 
 ,
 "NetworkMode": "host",
 "PortBindings": null,
 "RestartPolicy": 
 "Name": "",
 "MaximumRetryCount": 0
 ,
 "AutoRemove": false,
 "VolumeDriver": "",
 "VolumesFrom": null,
 "CapAdd": null,
 "CapDrop": null,
 "Dns": null,
 "DnsOptions": null,
 "DnsSearch": null,
 "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": [
 0,
 0
 ],
 "Isolation": "",
 "CpuShares": 0,
 "Memory": 1073741824,
 "NanoCpus": 0,
 "CgroupParent": "",
 "BlkioWeight": 0,
 "BlkioWeightDevice": null,
 "BlkioDeviceReadBps": null,
 "BlkioDeviceWriteBps": null,
 "BlkioDeviceReadIOps": null,
 "BlkioDeviceWriteIOps": null,
 "CpuPeriod": 0,
 "CpuQuota": 0,
 "CpuRealtimePeriod": 0,
 "CpuRealtimeRuntime": 0,
 "CpusetCpus": "",
 "CpusetMems": "",
 "Devices": null,
 "DeviceCgroupRules": null,
 "DiskQuota": 0,
 "KernelMemory": 0,
 "MemoryReservation": 0,
 "MemorySwap": -1,
 "MemorySwappiness": null,
 "OomKillDisable": false,
 "PidsLimit": 0,
 "Ulimits": null,
 "CpuCount": 0,
 "CpuPercent": 0,
 "IOMaximumIOps": 0,
 "IOMaximumBandwidth": 0
 ,
 "GraphDriver": 
 "Data": 
 "DeviceId": "119",
 "DeviceName": "docker-254:0-354418880-9759c901ef5109a23a913840bd789fa6934ac18a4688ba60cabbad13b15078b8",
 "DeviceSize": "10737418240"
 ,
 "Name": "devicemapper"
 ,
 "Mounts": [
 
 "Type": "bind",
 "Source": "/opt/emc/caspian/fabric/agent/services/fabric/lifecycle/host/data",
 "Destination": "/host/data",
 "Mode": "ro",
 "RW": false,
 "Propagation": "rprivate"
 ,
 
 "Type": "bind",
 "Source": "/opt/emc/caspian/fabric/agent/services/fabric/lifecycle/host/files",
 "Destination": "/host/files",
 "Mode": "ro",
 "RW": false,
 "Propagation": "rprivate"
 ,
 
 "Type": "bind",
 "Source": "/opt/emc/caspian/fabric/agent/services/fabric/data",
 "Destination": "/data",
 "Mode": "rw",
 "RW": true,
 "Propagation": "rprivate"
 ,
 
 "Type": "bind",
 "Source": "/opt/emc/caspian/fabric/agent/services/fabric/lifecycle/log",
 "Destination": "/var/log",
 "Mode": "rw",
 "RW": true,
 "Propagation": "rprivate"
 
 ],
 "Config": 
 "Hostname": "provo-burlywood",
 "Domainname": "",
 "User": "",
 "AttachStdin": false,
 "AttachStdout": false,
 "AttachStderr": false,
 "Tty": false,
 "OpenStdin": false,
 "StdinOnce": false,
 "Env": [
 "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
 "ZYPPER=zypper --no-gpg-checks --non-interactive",
 "JAVA_HOME=/usr/lib64/jvm/jre-1.8.0-oracle/",
 "APPLICATION=fabric",
 "ROLE=lifecycle",
 "VERSION=3.3.0.0-3594.2b8e92d",
 "DOCKER_FIX= "
 ],
 "Cmd": [
 "lifecycle"
 ],
 "Image": "caspian/fabric:3.3.0.0-3594.2b8e92d",
 "Volumes": null,
 "WorkingDir": "/opt/emc/caspian/fabric/lifecycle",
 "Entrypoint": [
 "./boot.sh"
 ],
 "OnBuild": null,
 "Labels": 
 ,
 "NetworkSettings": 
 "Bridge": "",
 "SandboxID": "683a8af8564b3083ac766b7065d5c84315ae8d2d0898c5099baccf2e137e7ca6",
 "HairpinMode": false,
 "LinkLocalIPv6Address": "",
 "LinkLocalIPv6PrefixLen": 0,
 "Ports": ,
 "SandboxKey": "/var/run/docker/netns/default",
 "SecondaryIPAddresses": null,
 "SecondaryIPv6Addresses": null,
 "EndpointID": "",
 "Gateway": "",
 "GlobalIPv6Address": "",
 "GlobalIPv6PrefixLen": 0,
 "IPAddress": "",
 "IPPrefixLen": 0,
 "IPv6Gateway": "",
 "MacAddress": "",
 "Networks": 
 "host": 
 "IPAMConfig": null,
 "Links": null,
 "Aliases": null,
 "NetworkID": "d8f7b03c732d5c57d170d76211c33710a17c8f670a5d8c9ebb91a0bdc2f8bb46",
 "EndpointID": "ef788fd7eaa43369a184287c88ea19a7f5f369c808d3af40b9df41579a1251a6",
 "Gateway": "",
 "IPAddress": "",
 "IPPrefixLen": 0,
 "IPv6Gateway": "",
 "GlobalIPv6Address": "",
 "GlobalIPv6PrefixLen": 0,
 "MacAddress": "",
 "DriverOpts": null
 
 
 
 
]

Output should be:

Don't use sed to parse large JSON structures. That command is already long and unwieldly, and relies on exact input order -- it will break if some entries swap places within the JSON input, or if another entry appears/disappears after the values you are interested in.

Instead, you could use a dedicated JSON parser, such as jq. Your original command can be replaced with

echo "$out" | jq -c '.|.Id,(.State|.Status,.Pid,.ExitCode),.Name,.HostConfig.Privileged,.Config.Cmd,.Config.Image' 

Note that you will have to look at the complete hierarchy of the JSON structure: "Privileged" is part of "HostConfig", "Pid" is part of "State", etc. The command can be split into multiple lines (and called with jq -f file.jq) as follows:

.| # run the following on all entries in the list
 .Id,
 (.State| #extract following members from .State:
 .Status, .Pid, .ExitCode
 ),
 .Name,
 .HostConfig.Privileged,
 .Config.Cmd,
 .Config.Image

This gives the following output:

"e5330efcb429bab6bb31571fb878d0cd3a7078c537bd9606360a05886e55f72e"
"running"
95168
0
"/fabric-lifecycle"
false
["lifecycle"]
"caspian/fabric:3.3.0.0-3594.2b8e92d"

(If you want to join that into a single comma-separated line, append | tr 'n' , to the pipeline.)

Then you can include Memory by appending .HostConfig.Memory to the list:

jq -c '.|.Id,(.State|.Status,.Pid,.ExitCode),.Name,.HostConfig.Privileged,.Config.Cmd,.Config.Image,.HostConfig.Memory'

I can't stress enough that sed is an unsuitable tool for parsing arbitrary nested structures like JSON. But if you are forced down this path...

Simple match based on next entry name

Let's break down what your first sed command is doing. It relies on matching the entry names of (hopefully) consecutive lines, and capturing what's between them:

.*"Privileged": (.*), "PublishAllPorts".*

matches these lines:

 "Privileged": false,
 "PublishAllPorts": false,

capturing the false at the end of the first line.

You then changed that part into:

.*"Privileged": (.*), "Memory": (.*), "PublishAllPorts".*

That will no longer match, because the entry "Memory" does not appear at that point in the file. If you want to match "Memory" in the same manner as before, you will have to see what comes next. From your docker output:

 "Memory": 1073741824,
 "NanoCpus": 0,

so you'll have to add this in the right place in your pattern:

"Memory": (.*), "NanoCpus"

All together, your sed command will have to look like this:

sed -n `s/.*"Id": "(.*)", "Created".*"Status": "(.*)", "Running".*"Pid": (.*),.*"ExitCode": (.*), "Error".*"Name": "/(.*)", "RestartCount".*"Privileged": (.*), "PublishAllPorts".*"Memory": (.*), "NanoCpus".*"Cmd": (.*), "Image": "(.*)", "Volumes".*/1;2;3;4;5;6;8;9;7/p`

Note that 7 has to go at the end of the replacement, as you wanted "Memory" to appear last.

Stricter matching based on content

Rather than relying on the next entry name, you could capture only the contents that you expect for the entry, using stricter patterns than (.*). This still requires some context for the "Image" entry. I'm using the direct output from docker, rather than saving into a variable and echo, so the linebreaks are maintained. This means I also need some extra sed trickery to join the "Cmd" back into a single line, and warrants putting the whole sed command into a script.

sudo docker inspect fabric-lifecycle | sed -f extract.sed 

Contents of extract.sed:

#no echo
s/^s*"Id": "([^"]*)",s*$/1/p # anything but the closing "
s/^s*"Status": "([^"]*)",s*$/1/p
s/^s*"Pid": ([0-9]*),s*$/1/p # decimal number
s/^s*"ExitCode": ([0-9]*),s*$/1/p
s/^s*"Name": "/([^"]*)",s*$/1/p # match from "/ to closing "
s/^s*"Privileged": ([^,]*),s*$/1/p # match up to comma (unquoted boolean)
/^s*"Cmd": [/
 :more
 s/s+/ /g # collapse whitespace
 /],s*$/bb # if closing ] found, jump to "final"
 N # append next line
 ba # loop to "more"
 :final
 s/^.*"Cmd": ([.*]),s*$/1/p # capture everything inside [...]

/^s*"Config": $/,/^s*$/ # only match next line inside "Config"
 s/^s*"Image": "([^"]*)",s*$/1/p

s/^s*"Memory": ([0-9]*),s*$/1/p

This produces the output:

e5330efcb429bab6bb31571fb878d0cd3a7078c537bd9606360a05886e55f72e
running
95168
0
fabric-lifecycle
false
1073741824
[ "lifecycle" ]
caspian/fabric:3.3.0.0-3594.2b8e92d