I wanted to make a Dockerfile with multiple images to run in one container.
What is the best method to go about this? Below is a list of what I wanted to run in a single container. I have not have any luck with making a Dockerfile with all of these included.
MySQL Server
RabbitMQ
Java8
Node.js
Xvfb
Firefox
Chrome
This is what I have so far, can I get a few tips
FROM stackbrew/ubuntu:12.04
MAINTAINER
# Update the repository sources list #RUN apt-get update
# My SQL Server ###############
RUN apt-get
update -qq && apt-get
install -y mysql-server-5.5
ADD my.cnf /etc/mysql/conf.d/my.cnf
RUN chmod 664 /etc/mysql/conf.d/my.cnf
ADD run /usr/local/bin/run
RUN chmod +x /usr/local/bin/run V
OLUME ["/var/lib/mysql"]
EXPOSE 3306
CMD ["/usr/local/bin/run"]
You cannot have "multiple images to run in one container", that wouldn't make sense.
But you can write a Dockerfile to create an image that will install all the services you mentionned. Example (Ubuntu/Debian distribution) :
[...header...]
FROM stackbrew/ubuntu:12.04 #or use ubuntu-upstart:12.04
MAINTAINER BPetkov
# Update the repository sources list
RUN apt-get update -qq
# Mysql
RUN apt-get install -y mysql-server-5.5
ADD my.cnf /etc/mysql/conf.d/my.cnf
RUN chmod 664 /etc/mysql/conf.d/my.cnf
ADD run /usr/local/bin/run
RUN chmod +x /usr/local/bin/run
# Other stuff
RUN apt-get -y install rabbitmq
RUN apt-get -y install nodejs
[...]
VOLUME ["/var/lib/mysql"]
EXPOSE 3306
EXPOSE .......
CMD ["/sbin/init"]
Then you would have to get all of them started automatically when the container starts.
You can use a process manager such as supervisord (Docker documentation here).
Alternatively, you could use a regular init system, check this base image : ubuntu-upstart. This one would allow you to only have to install the packages in your Dockerfile and get them started automatically without any effort, by specifying /sbin/init as EntryPoint or CMD in your Dockerfile.
The feature you're looking for is Docker Compose.
Related
I have made a docker container meant with some code for deployment. However, I realised that the structure of the project I'm working with, it's more suitable to deploy a full ISO image, instead of running docker on top of a cloud VM running stock debian, leading to unnecessary layers of virtualization.
I know that dockers are meant to be deployed on kubernetes, but before diving into that route, is there a simple way to convert a deb9 docker image into a full deb9 OS image? Like an opposite of docker import?
You can convert your docker container to an full os image. An Dockerfile debian example would be
FROM debian:stretch
RUN apt-get -y install --no-install-recommends \
linux-image-amd64 \
systemd-sysv
In principal you have to install a kernel and an init system.
Full instructions can be found github
Docker images don't contain a Linux kernel and aren't configured to do things like run a full init system or go out and get their network configuration, so this won't work well.
Put differently: the same mismatch that makes docker import not really work well because the resulting container will have too much stuff and won't be set up for Docker, means you can't export a container or image into a VM and expect it to work in that environment.
But! If you've written a Dockerfile for your image, that's very close to saying "I'm going to start from this base Linux distribution and run this shell script to get an image". Tools like Packer are set up to take a base Linux VM image, run some sort of provisioner, and create a new image. If you have a good Docker setup already, and decide a VM is a better fit, you're probably done a lot of the leg-work already to have an automated build of your VM image.
#info
we can use docker like vm / flatpak / appimge / termux with gui, audio and hardware acceleration :)
how to do it ?
remove old docker
sudo apt-get remove docker docker-engine docker.io containerd runc
===================
install the commponents
sudo apt-get update
sudo apt install apt-transport-https ca-certificates curl gnupg lsb-release
=============================
3.. add docker repo docker
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo
"deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
================
install docker
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io
=============================
=========================
create docker
docker image
su
cd /home/
kwrite Dockerfile
FROM debian:testing
ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get -y install midori bash mpv pulseaudio pulseaudio-utils pulsemixer pulseaudio-module-jack apulse neofetch vlc smplayer wget sudo cairo-dock cairo-dock-plug-ins xfce4 xfce4-goodies falkon kde-full xfce4-whiskermenu-plugin gnome tigervnc-standalone-server openssh-server openssh-client network-manager net-tools iproute2 gerbera openjdk-11-jdk mediainfo dcraw htop gimp krita libreoffice python3-pip terminator uget alsa-utils
ENV PULSE_SERVER=tcp:host.docker.internal:4713
CMD bash
save it
the run interminal
sudo docker build -t supersifobian .
how to use gui
xhost +
run image gui
sudo apt-get -y install xpra xserver-xephyr xinit xauth
xclip x11-xserver-utils x11-utils
run docker
sudo docker run -ti --net=host --device=/dev/dri:/dev/dri -e DISPLAY=:0 --privileged --cap-add=ALL --device /dev/snd --volume /dev:/dev -v /dev:/dev --group-add audio -v /var/run/docker.sock:/host/var/run/doc -e PULSE_SERVER=tcp:$P ULSE_SERVER -v /dev:/host/dev -v /proc:/host/proc:ro -v /boot:/host/boot:ro -v /lib/modules:/host/lib/modules:ro -v /usr:/host/usr:ro -v /media:/host/media:ro -v /home:/host/home:ro imageid / image name
nb
enter container
docker exec -it nama/id container bash
add user
adduser namauser
make use as sudo
usermod -aG sudo username
add group audio
usermod -aG audio username
=========================
audio in docker cli
using prafer
a. install paprefs
apt-get install paprefs
b.choose network in prafers
c. how to know the pulse audio port, we can type
pax11publish
d. export to terminal in docker
export "PULSE_SERVER=tcp:192.168.43.135:37721"
==================================
save docker
docker commit idcontainer nameimage:version
========================
check images
docker images
==================================
thanks :)
Is it possible to set up a generic Docker image with Stackdriver monitoring agents so it can send logging data within the container to Stackdriver, then which can be used across any VM instances regardless of GCE and AWS?
Update
FROM ubuntu:16.04
USER root
ADD . /
ENV GOOGLE_APPLICATION_CREDENTIALS="/etc/google/auth/application_default_credentials.json"
RUN apt-get update && apt-get -y --no-install-recommends install wget curl python-minimal ca-certificates lsb-release libidn11 openssl && \
RUN curl -sSO https://dl.google.com/cloudagents/install-logging-agent.sh
RUN bash install-logging-agent.sh
Im exactly following what's been said in the documentation. The installation goes fine. But google-fluentd is failing to start/restart.
Thanks in advance.
Yes, this should be possible according to the documentation.
You will need to make sure that Stackdriver agent is installed and configured correctly in your docker image.
I'm using this scheme :
1/ I'm working on windows 7
2/ I'm using vagrant to mount a "ubuntu/trusty64" box
3/ I apt-get install ansible
4/ I install docker and docker-compose with ansibe
5/ I create a docker image with this dockerfile :
FROM php:7-apache
MAINTAINER Bruno DA SILVA "bruno.dasilva#foo.com"
COPY containers-dirs-and-files/var/www/html/ /var/www/html/
WORKDIR /var/www/html
6/ I run it :
sudo docker build -t 10.100.200.200:5000/pimp-hello-world .
sudo docker run -p 80:80 -d --name test-php 10.100.200.200:5000/pimp-hello-world
7/ apache can't display the page, I have to add :
RUN chmod -R 755 /var/www/html
to the dockerfile in order to have it visible.
so here is my question : can I handle files permission while working on windows (and how)? Or do I have to move under linux?
This happens in Linux. Docker copies the files and put root as owner. The only way I have found to overcome this without using chmod, is archiving the files in a tar file and then use
ADD content.tgz /var/www/html
It will expand automatically
Regards
I'm trying to dockerize my node.js app. When the container is built I want it to run a git clone and then start the node server. Therefore I put these operations in a .sh script. And run the script as a single command in the ENTRYPOINT:
FROM ubuntu:14.04
RUN apt-get update && apt-get install -y build-essential libssl-dev gcc curl npm git
#install gcc 4.9
RUN apt-get install -y software-properties-common python-software-properties
RUN add-apt-repository -y ppa:ubuntu-toolchain-r/test
RUN apt-get update
RUN apt-get install -y libstdc++-4.9-dev
#install newst nodejs
RUN curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
RUN apt-get install -y nodejs
RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app
ADD package.json /usr/src/app/
RUN npm install
ADD docker-entrypoint.sh /usr/src/app/
EXPOSE 8080
ENTRYPOINT ["/usr/src/app/docker-entrypoint.sh"]
My docker-entrypoint.sh looks like this:
git clone git#<repo>.git
git add remote upstream git#<upstream_repo>.git
/usr/bin/node server.js
After building this image and run:
docker run --env NODE_ENV=development -p 8080:8080 -t -i <image>
I'm getting:
docker: Error response from daemon: oci runtime error: exec: "/usr/src/app/docker-entrypoint.sh": permission denied.
I shell into the container and the permission of docker-entrypoint.sh is:
-rw-r--r-- 1 root root 292 Aug 10 18:41 docker-entrypoint.sh
three questions:
Does my bash script have wrong syntax?
How do I change the permission of a bash file before adding it into an image?
What's the best way to run multiple git commands in entrypoint without using a bash script?
Thanks.
"Permission denied" prevents your script from being invoked at all. Thus, the only syntax that could be possibly pertinent is that of the first line (the "shebang"), which should look like #!/usr/bin/env bash, or #!/bin/bash, or similar depending on your target's filesystem layout.
Most likely the filesystem permissions not being set to allow execute. It's also possible that the shebang references something that isn't executable, but this is far less likely.
Mooted by the ease of repairing the prior issues.
The simple reading of
docker: Error response from daemon: oci runtime error: exec: "/usr/src/app/docker-entrypoint.sh": permission denied.
...is that the script isn't marked executable.
RUN ["chmod", "+x", "/usr/src/app/docker-entrypoint.sh"]
will address this within the container. Alternately, you can ensure that the local copy referenced by the Dockerfile is executable, and then use COPY (which is explicitly documented to retain metadata).
An executable file needs to have permissions for execute set before you can execute it.
In your machine where you are building the docker image (not inside the docker image itself) try running:
ls -la path/to/directory
The first column of the output for your executable (in this case docker-entrypoint.sh) should have the executable bits set something like:
-rwxrwxr-x
If not then try:
chmod +x docker-entrypoint.sh
and then build your docker image again.
Docker uses it's own file system but it copies everything over (including permissions bits) from the source directories.
I faced same issue & it resolved by
ENTRYPOINT ["sh", "/docker-entrypoint.sh"]
For the Dockerfile in the original question it should be like:
ENTRYPOINT ["sh", "/usr/src/app/docker-entrypoint.sh"]
The problem is due to original file not having execute permission.
Check original file has permission.
run ls -al
If result get -rw-r--r-- ,
run
chmod +x docker-entrypoint.sh
before docker build!
Remove Dot [.]
This problem take with me more than 3 hours finally, I just tried the problem was in removing dot from the end just.
problem was
docker run -p 3000:80 --rm --name test-con test-app .
/usr/local/bin/docker-entrypoint.sh: 8: exec: .: Permission denied
just remove dot from the end of your command line :
docker run -p 3000:80 --rm --name test-con test-app
Grant execution rights to the file docker-entrypoint.sh
sudo chmod 775 docker-entrypoint.sh
This is a bit stupid maybe but the error message I got was Permission denied and it sent me spiralling down in a very wrong direction to attempt to solve it. (Here for example)
I haven't even added any bash script myself, I think one is added by nodejs image which I use.
FROM node:14.9.0
I was wrongly running to expose/connect the port on my local:
docker run -p 80:80 [name] . # this is wrong!
which gives
/usr/local/bin/docker-entrypoint.sh: 8: exec: .: Permission denied
But you shouldn't even have a dot in the end, it was added to documentation of another projects docker image by misstake. You should simply run:
docker run -p 80:80 [name]
I like Docker a lot but it's sad it has so many gotchas like this and not always very clear error messages...
This is an old question asked two years prior to my answer, I am going to post what worked for me anyways.
In my working directory I have two files: Dockerfile & provision.sh
Dockerfile:
FROM centos:6.8
# put the script in the /root directory of the container
COPY provision.sh /root
# execute the script inside the container
RUN /root/provision.sh
EXPOSE 80
# Default command
CMD ["/bin/bash"]
provision.sh:
#!/usr/bin/env bash
yum upgrade
I was able to make the file in the docker container executable by setting the file outside the container as executable chmod 700 provision.sh then running docker build . .
If you do not use DockerFile, you can simply add permission as command line argument of the bash:
docker run -t <image> /bin/bash -c "chmod +x /usr/src/app/docker-entrypoint.sh; /usr/src/app/docker-entrypoint.sh"
If you still get Permission denied errors when you try to run your script in the docker's entrypoint, just try DO NOT use the shell form of the entrypoint:
Instead of:
ENTRYPOINT ./bin/watcher write ENTRYPOINT ["./bin/watcher"]:
https://docs.docker.com/engine/reference/builder/#entrypoint
I'm following this part of the Docker tutorial (on a Mac): https://docs.docker.com/mac/step_four/. I'm getting an error when I try to run the docker-whalesay image because it can't find fortunes.
I started off in the Dockerfile using /user/games/fortunes. Then I changed to just fortunes. Neither work.
How do I specify in the Dockerfile to use the current folder (mydockerbuild)?
The Dockerfile in that example does not rely on files that are present on your computer, basically, the only steps needed are;
Create an empty directory (you named it mydockerbuild)
mkdir mydockerbuild
Change to that directory
cd mydockerbuild
Create a Dockerfile
Edit the Dockerfile to look like this;
FROM docker/whalesay:latest
RUN apt-get -y update && apt-get install -y fortunes
CMD /usr/games/fortune -a | cowsay
Build the Dockerfile, and name the built image "docker-whale"
docker build -t docker-whale .
Run the image you just built
docker run --rm docker-whale
The /usr/games/fortunes path in the Dockerfile is referring to a path inside the container. In this case, the /usr/games/fortunes is created by the fortune package that it's installed by apt-get install -y fortunes.