Sample Dockerfile fails on Play-With-Docker (running Alpine Linux)

[dannaf]

Description

A sample Dockerfile for building Theia in a container does not work as-stated / out-of-the-box (using Play-With-Docker in the browser).

Reproduction Steps

Following the commented instructions at the top of this sample Dockerfile on https://labs.play-with-docker.com, I received the following error message at the end of the evaluation of the docker build -t theia . line:

E: Unable to locate package npm
The command '/bin/sh -c apt-get update && apt-get install -y npm && npm install -g yarn@1.3.2' returned a non-zero code: 100

When I then run the problematic line myself in the in-browser/playground terminal window, i.e., execute:

/bin/sh -c apt-get update && apt-get install -y npm && npm install -g yarn@1.3.2
update: line 1: apt-get: not found

the following response is generated:

update: line 1: apt-get: not found

OS and Theia version:
Chrome 69.0.3497.92
macOS Sierra 10.12.6
(No Theia version, since working on in-browser instance to install Theia via Dockerfile…)

Diagnostics:

The following show's the OS version of the Play-With-Docker (PWD) session during this experience (2019-09-15), revealing that PWD is running Alpine Linux:

[node1] (local) root@192.168.0.68 ~
$ cat /etc/os-release
NAME="Alpine Linux"
ID=alpine
VERSION_ID=3.10.1
PRETTY_NAME="Alpine Linux v3.10"
HOME_URL="https://alpinelinux.org/"
BUG_REPORT_URL="https://bugs.alpinelinux.org/"

---

The entire output of the docker build command from above is shown here for completeness, to clarify when in the process the error was printed:

[node1] (local) root@192.168.0.68 ~
$ docker build -t theia .
Sending build context to Docker daemon  38.14MB
Step 1/11 : FROM node:8
8: Pulling from library/node
092586df9206: Pull complete 
ef599477fae0: Pull complete 
4530c6472b5d: Pull complete 
d34d61487075: Pull complete 
87fc2710b63f: Pull complete 
e83c771c5387: Pull complete 
544e37709f92: Pull complete 
3aaf6653b5f3: Pull complete 
1fed50f6e111: Pull complete 
Digest: sha256:c00557b8634c74012eda82ac95f1813c9ea8c152a82f53ad71c5c9611f6f8c3c
Status: Downloaded newer image for node:8
 ---> 7a9afc16a57f
Step 2/11 : RUN useradd --create-home theia
 ---> Running in 281b70e68f13
Removing intermediate container 281b70e68f13
 ---> 7e2adca5ad6b
Step 3/11 : WORKDIR /home/theia
 ---> Running in c15c5fd6d724
Removing intermediate container c15c5fd6d724
 ---> 66d45f30ad52
Step 4/11 : RUN rm -rf /opt/yarn && rm -f /usr/local/bin/yarn && rm -f /usr/local/bin/yarnpkg
 ---> Running in 039125d07a0a
Removing intermediate container 039125d07a0a
 ---> e4b3efddc067
Step 5/11 : RUN apt-get update && apt-get install -y npm && npm install -g yarn@1.3.2
 ---> Running in 921026bdb1d3
Get:1 http://security.debian.org/debian-security stretch/updates InRelease [94.3 kB]
Ign:2 http://deb.debian.org/debian stretch InRelease
Get:3 http://deb.debian.org/debian stretch-updates InRelease [91.0 kB]
Get:4 http://deb.debian.org/debian stretch Release [118 kB]
Get:5 http://deb.debian.org/debian stretch Release.gpg [2365 B]
Get:6 http://security.debian.org/debian-security stretch/updates/main amd64 Packages [503 kB]
Get:7 http://deb.debian.org/debian stretch-updates/main amd64 Packages [27.4 kB]
Get:8 http://deb.debian.org/debian stretch/main amd64 Packages [7086 kB]
Fetched 7922 kB in 6s (1291 kB/s)
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package npm
The command '/bin/sh -c apt-get update && apt-get install -y npm && npm install -g yarn@1.3.2' returned a non-zero code: 100

---

When I ran a simple modified Dockerfile to check the OS of the node:8 image:

FROM node:8
CMD cat /etc/os-release

then docker build -t test . && docker run test:

$ docker run test
PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
NAME="Debian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"
VERSION_CODENAME=stretch
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

[akosyakov]

@dannaf please have a look at docker images here: https://github.com/theia-ide/theia-apps i.e. docker full

@marcdumais-work are you aware of anyone using a Docker image in theia brorwser example? I've not tried it for years already. Maybe it is better to remove it.

[502647092]

@dannaf maybe you need use alpine package apk
here have some example file
https://github.com/502647092/Dockerfile/blob/master/development/Dockerfile-alpine
https://github.com/502647092/Dockerfile/blob/master/theia-alpine/Dockerfile

[dannaf]

Thanks! I'll try based on the docker full Dockerfiles, etc.

I think the in-browser example is nice to have, I would keep it and just update so that it works out-of-the-box.