file-generating/URL-to-PDF\ api: Example doesn't run

[cyanezstange]

Example: file-generating/URL-to-PDF\ api

• Locally building the image works on both arm64 and x86_64, but it gets a lot of 404 errors when trying to access the Debian repositories. Several vulnerabilities are also reported near the end of the process.

$ sudo singularity build url-to-pdf.sif url-to-pdf.def 
INFO:    Starting build...
INFO:    Fetching OCI image...
4.1MiB / 4.1MiB [================================================================] 100 % 87.5 MiB/s 0s
43.3MiB / 43.3MiB [==============================================================] 100 % 87.5 MiB/s 0s
47.8MiB / 47.8MiB [==============================================================] 100 % 87.5 MiB/s 0s
1.3MiB / 1.3MiB [================================================================] 100 % 87.5 MiB/s 0s
10.3MiB / 10.3MiB [==============================================================] 100 % 87.5 MiB/s 0s
204.9MiB / 204.9MiB [============================================================] 100 % 87.5 MiB/s 0s
18.5MiB / 18.5MiB [==============================================================] 100 % 87.5 MiB/s 0s
INFO:    Extracting OCI image...
INFO:    Inserting Singularity configuration...
INFO:    Running post scriptlet
+ apt-get -y update
Ign:1 http://deb.debian.org/debian stretch InRelease
Ign:2 http://deb.debian.org/debian stretch-updates InRelease
Ign:3 http://deb.debian.org/debian stretch Release
Ign:4 http://deb.debian.org/debian stretch-updates Release
Ign:5 http://deb.debian.org/debian stretch/main all Packages
Ign:6 http://deb.debian.org/debian stretch/main amd64 Packages
Ign:7 http://deb.debian.org/debian stretch-updates/main all Packages
Ign:8 http://deb.debian.org/debian stretch-updates/main amd64 Packages
Ign:5 http://deb.debian.org/debian stretch/main all Packages
Ign:6 http://deb.debian.org/debian stretch/main amd64 Packages
Ign:7 http://deb.debian.org/debian stretch-updates/main all Packages
Ign:8 http://deb.debian.org/debian stretch-updates/main amd64 Packages
Ign:5 http://deb.debian.org/debian stretch/main all Packages
Ign:6 http://deb.debian.org/debian stretch/main amd64 Packages
Ign:7 http://deb.debian.org/debian stretch-updates/main all Packages
Ign:8 http://deb.debian.org/debian stretch-updates/main amd64 Packages
Ign:5 http://deb.debian.org/debian stretch/main all Packages
Ign:6 http://deb.debian.org/debian stretch/main amd64 Packages
Ign:7 http://deb.debian.org/debian stretch-updates/main all Packages
Ign:8 http://deb.debian.org/debian stretch-updates/main amd64 Packages
Ign:5 http://deb.debian.org/debian stretch/main all Packages
Ign:6 http://deb.debian.org/debian stretch/main amd64 Packages
Ign:7 http://deb.debian.org/debian stretch-updates/main all Packages
Ign:8 http://deb.debian.org/debian stretch-updates/main amd64 Packages
Ign:5 http://deb.debian.org/debian stretch/main all Packages
Err:6 http://deb.debian.org/debian stretch/main amd64 Packages
  404  Not Found [IP: 146.75.34.132 80]
Ign:7 http://deb.debian.org/debian stretch-updates/main all Packages
Err:8 http://deb.debian.org/debian stretch-updates/main amd64 Packages
  404  Not Found [IP: 146.75.34.132 80]
Ign:9 http://security.debian.org/debian-security stretch/updates InRelease
Ign:10 http://security.debian.org/debian-security stretch/updates Release
Ign:11 http://security.debian.org/debian-security stretch/updates/main all Packages
Ign:12 http://security.debian.org/debian-security stretch/updates/main amd64 Packages
Ign:11 http://security.debian.org/debian-security stretch/updates/main all Packages
Ign:12 http://security.debian.org/debian-security stretch/updates/main amd64 Packages
Ign:11 http://security.debian.org/debian-security stretch/updates/main all Packages
Ign:12 http://security.debian.org/debian-security stretch/updates/main amd64 Packages
Ign:11 http://security.debian.org/debian-security stretch/updates/main all Packages
Ign:12 http://security.debian.org/debian-security stretch/updates/main amd64 Packages
Ign:11 http://security.debian.org/debian-security stretch/updates/main all Packages
Ign:12 http://security.debian.org/debian-security stretch/updates/main amd64 Packages
Ign:11 http://security.debian.org/debian-security stretch/updates/main all Packages
Err:12 http://security.debian.org/debian-security stretch/updates/main amd64 Packages
  404  Not Found [IP: 146.75.34.132 80]
Reading package lists... Done
W: The repository 'http://deb.debian.org/debian stretch Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://deb.debian.org/debian stretch-updates Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://security.debian.org/debian-security stretch/updates Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://deb.debian.org/debian/dists/stretch/main/binary-amd64/Packages  404  Not Found [IP: 146.75.34.132 80]
E: Failed to fetch http://deb.debian.org/debian/dists/stretch-updates/main/binary-amd64/Packages  404  Not Found [IP: 146.75.34.132 80]
E: Failed to fetch http://security.debian.org/debian-security/dists/stretch/updates/main/binary-amd64/Packages  404  Not Found [IP: 146.75.34.132 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
+ git clone https://github.com/alvarcarto/url-to-pdf-api.git pdf_server
Cloning into 'pdf_server'...
remote: Enumerating objects: 865, done.
remote: Counting objects: 100% (85/85), done.
remote: Compressing objects: 100% (71/71), done.
remote: Total 865 (delta 42), reused 29 (delta 10), pack-reused 780
Receiving objects: 100% (865/865), 5.06 MiB | 0 bytes/s, done.
Resolving deltas: 100% (496/496), done.
+ cd pdf_server
+ npm install

> [email protected] install /pdf_server/node_modules/puppeteer
> node install.js

Downloading Chromium r706915 - 118.3 Mb [====================] 100% 0.0s 
Chromium downloaded to /pdf_server/node_modules/puppeteer/.local-chromium/linux-706915

> [email protected] postinstall /pdf_server/node_modules/nodemon
> node bin/postinstall || exit 0

Love nodemon? You can now support the project via the open collective:
 > https://opencollective.com/nodemon/donate

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

added 487 packages from 622 contributors and audited 556 packages in 10.106s

1 package is looking for funding
  run `npm fund` for details

found 95 vulnerabilities (7 low, 27 moderate, 52 high, 9 critical)
  run `npm audit fix` to fix them, or `npm audit` for details
+ chmod -R 0755 .
INFO:    Adding environment to container
INFO:    Adding startscript
INFO:    Creating SIF file...
INFO:    Build complete: url-to-pdf.sif

• Although the building process seems successful, the SIF file created does not work as README.md says. For some reason, the started instance is not working as expected and cannot connect.

$ sudo singularity instance start url-to-pdf.sif pdf
INFO:    instance started successfully

$ curl -o sylabs.pdf localhost:9000/api/render?url=http://sylabs.io/docs
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (7) Failed to connect to localhost port 9000 after 0 ms: Connection refused