Articles, notes and random thoughts on Software Development and Technology
I’ve been spending some time working with Docker recently – it’s incredible technology and understandable why it’s getting so much attention for automating reproducible runtimes. Here’s a quick 5 min overview covering an overview in 5 mins by Vincent Batts, who works at Red Hat on Docker and OpenShift:
Trying to run a shell into a running container (docker exec -it containerid bash) using DockerToolbox/docker-machine on Windows 7 gives this error: “cannot enable tty mode on non tty input” (this runs fine on Mac OS X) This is logged as an issue here. As a workaround, prefix the docker command with winpty, so: winpty …
By trial and error I worked this out while building a container running Weblogic Portal 10.3.6 (see my Dockerfiles in the 10.3.6updates branch of my fork of oracle/docker: https://github.com/kevinhooke/weblogic-docker/tree/10.3.6updates). Even if you do a ‘USER oracle’ followed by a COPY or ADD, the files transferred into the image are still owned by root. This was …
Continue reading “Docker ADD and COPY leave files owned by root by default”
I’ve been playing on and off with Docker but not frequently enough to remember what I did last time, so here’s a few random unstructured notes (running on Mac OS X): docker ps : list running containers (this shows a container id which is used in most other commands) docker ps -a : show all …