Archives de catégorie : administration serveur

Difficulty with docker builds is to understand when mounted volumes are available. # strategies : a) wrap a bash script around the docker runs & do commands via « docker exec » b) use COPY/ADD commands to inject context into the image … Continuer la lecture →

# ! you can actually create networks of containers without any docker-compose.yml file ! docker run –net –net-alias [] []

4 available network drivers : docker run –net [] – bridge (default) has its own virtual eth0 layer connected to a virtual docker0 switch layer – null ! no connection whatsoever ! – host takes on ALL network config of … Continuer la lecture →

# docker logs # docker inspect One prop : docker inspect –format « {{ prop.prop }} » # Discover reachable ports : docker port Ex. : tell me what port on the Host machine is mapped to port 80 on the container … Continuer la lecture →

# independency of layers ! Base principle : each command within a Dockerfile (as in an image) is an INDEPENDENT LAYER ! This implies that each LAYER has its own environment. ! Example : CMD cd /tmp COPY ./* . … Continuer la lecture →

A container can be turned into an image ! (although, the advised process is via Dockerfile) docker run -it – modify the container (install pkg, etc.) docker commit => yes, you’ve got your img 😉