You cannot save a variable for later use in other Dockerfile commands (if that is your intention). This is because each RUN happens in a new shell. However, if you just want to capture the output of ls you should be able to do it in one RUN compound command. For example: RUN file=”$(ls -1 … Read more
When you use both entrypoint and command, the command section will be appended to entrypoint executable as arguments. Thus in your case: ENTRYPOINT [“/start.sh”] CMD [“aptly”, “api”, “serve”] Is equivalent to running: ENTRYPOINT[“/start.sh”, “aptly”, “api”, “serve”]
The VOLUME command will specify a mount point in the container. This mount point will be mapped to a location on the host that is either specified when the container is created or (when not specified) chosen automatically from a directory created in /var/lib/docker/volumes. If the directory chosen as the mount point contains any files … Read more
On Linux, cgroups and Docker CPU stats deal in “time slices” of CPU, the number of nanoseconds the CPU has been in use for. To get the percentage, the container cgroup value of “time used” is compared to the overall system value for “time available” from /proc/stat. Due to the stored “time slice” values being … Read more
I’m not using remote containers, just local once, so not sure if this applies but for locally running containers, you can go to the “Docker” tab (you need to install the official Microsoft Docker VS Code Plugin) where you can see your running containers. Just right-click on the container you want to see the logs … Read more
So what you need to do in the windows machine port forward the port you are running on the WSL machine, this script port forwards the port 4000 netsh interface portproxy delete v4tov4 listenport=”4000″ # Delete any existing port 4000 forwarding $wslIp=(wsl -d Ubuntu -e sh -c “ip addr show eth0 | grep ‘inet\b’ | … Read more
In my case, I was using docker-compose run without the –service-ports argument, so port mappings were ignored. Example: docker-compose.yml version: “3” services: app-host: image: nginx:1.19.0-alpine working_dir: /app volumes: – ./:/app/ ports: – “80:3000” command docker-compose run –service-ports app-host References: discussion forum docker-compose documentation
first of all, you don’t want to install the “snap” package, as it is not related to “snapd”. Secondly, myself stumbled across this issue of installing snapd within a docker container: TLDR; Running snapd that way is currently not supported. But that question has been asked already at the snapcraft forums. One of snapd’s dependencies … Read more
Unless you specifically attach (-a or -i options) when you start the container, by definition you are detached. Creating a container simply builds the filesystem layer. Starting it runs the ENTRYPOINT (or CMD) process. Run does both the create and the start, as you surmised. So you cannot “attach” to a created container… there is … Read more
I’m not sure if the –net option ever existed but it’s now –network. From docker run –help: –network string Connect a container to a network (default “default”) As @maxm notes you can find the network name, with the DIR prefix of the compose project directory, then simply run it as you were trying: $ docker … Read more