get label value from docker inspect [duplicate]

Question

I had problem to get the value from the map list due to the key has "." inside.

docker inspect jenkins 

  Config: {   ..       "Labels": {             "com.docker.compose.config-hash": "85bcf1e0bcd708120185a303e2a8d8e65543c1ec77ec0c6762fc057dc10320aa",             "com.docker.compose.container-number": "1",             "com.docker.compose.oneoff": "False",             "com.docker.compose.project": "new",             "com.docker.compose.service": "sc2",             "com.docker.compose.version": "1.5.2"         }     } } 

I can get map list

 docker inspect -f {{.Config.Labels}} new_sc2_1 map[com.docker.compose.config-hash:85bcf1e0bcd708120185a303e2a8d8e65543c1ec77ec0c6762fc057dc10320aa com.docker.compose.container-number:1 com.docker.compose.oneoff:False com.docker.compose.project:new com.docker.compose.service:sc2 com.docker.compose.version:1.5.2] 

But how can I get the project name new from key com.docker.compose.project

docker inspect -f {{.Config.Labels.com.docker.compose.project}} new_sc2_1 <no value> 

Answer 1

You can use index to get the value of that key (wrapped for readability);

docker inspect \   --format '{{ index .Config.Labels "com.docker.compose.project"}}' \   new_sc2_1 

That should give you the name of the project

Answer 2

You could pipe the output of docker inspect to jq. Given content like this:

...         "Labels": {             "com.docker.compose.config-hash": "a804d541a5828f4aaf17df862b650e58ac5bae77b70ff5ebdb2f0f3682326954",             "com.docker.compose.container-number": "1",             "com.docker.compose.oneoff": "False",             "com.docker.compose.project": "postgis",             "com.docker.compose.service": "postgis",             "com.docker.compose.version": "1.7.0rc1"         } ... 

I can extract an individual label value like this:

docker inspect mycontainer | jq -r '.[0].Config.Labels["com.docker.compose.project"]' 

Which gets me:

postgis