# Docker installation schlägt fehl bei Composer install (letzter Schritt)

**URL:** <https://forum.shopware.com/t/docker-installation-schlagt-fehl-bei-composer-install-letzter-schritt/69039>\
**Category:** Installation / Einstieg\
**Created:** [19. August 2020 um 13:32 UTC](https://forum.shopware.com/t/docker-installation-schlagt-fehl-bei-composer-install-letzter-schritt/69039 "2020-08-19T13:32:35Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![MartinRa](https://avatars.discourse-cdn.com/v4/letter/m/c0e974/32.png) [@MartinRa](https://forum.shopware.com/u/MartinRa)\
**Post date:** [19. August 2020 um 13:32 UTC](https://forum.shopware.com/t/docker-installation-schlagt-fehl-bei-composer-install-letzter-schritt/69039/1 "2020-08-19T13:32:35Z")

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Hallo zusammen,

leider bekomme ich die Docker Umgebung nicht zum laufen.

Die Schritte aus&nbsp;[https://docs.shopware.com/en/shopware-platform-dev-en/system-guide/installation](https://docs.shopware.com/en/shopware-platform-dev-en/system-guide/installation)&nbsp;habe ich befolgt.

Beim ausführen des Installers (Punkt 2 composer install) knallt es:&nbsp;./psh.phar install

&nbsp;

(2/38) Starting  
\> composer install --no-interaction --optimize-autoloader --no-suggest --no-scripts  
&nbsp; &nbsp; &nbsp; &nbsp; Unable to locate a valid CA certificate file. You must set a valid ‚cafile‘ option.  
&nbsp; &nbsp; &nbsp; &nbsp; A valid CA certificate file is required for SSL/TLS protection.  
&nbsp; &nbsp; &nbsp; &nbsp; You can disable this error, at your own risk, by setting the ‚disable-tls‘ option to true.

&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [Composer\Downloader\TransportException] &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;  
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; The configured cafile was not valid or could not be read. &nbsp;

&nbsp;

Habe schon verschiedene Lösungsansätze versucht aber bringt leider alles nichts (sogar im Github reportet:&nbsp;[https://github.com/shopware/development/issues/115](https://github.com/shopware/development/issues/115))

&nbsp;

Vielleicht hat ja jemand einen Tipp?

&nbsp;

Danke und Grüße