# Issue regarding Docker development image

**URL:** <https://meta.discourse.org/t/issue-regarding-docker-development-image/53702>\
**Category:** Development\
**Created:** [December 2, 2016, 5:47pm UTC](https://meta.discourse.org/t/issue-regarding-docker-development-image/53702 "2016-12-02T17:47:12Z")\
**Posts on this page:** 1\
**Showing post:** 20

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**Author:** ![ibnesayeed](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/ibnesayeed/32/120427_2.png) [@ibnesayeed](https://meta.discourse.org/u/ibnesayeed)\
**Post date:** [December 12, 2016, 10:26pm UTC](https://meta.discourse.org/t/issue-regarding-docker-development-image/53702/20 "2016-12-12T22:26:22Z")

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This is awesome @sam. I am little curious about a command there though.

```plaintext
CMD="mailcatcher --http-ip 0.0.0.0 -f || (apt-get install -y libsqlite3-dev && gem install mailcatcher && mailcatcher --http-ip 0.0.0.0 -f)"

```

Why do we have a fallback (or ensuring) installation command here? Why can’t it be made sure in the Docker image beforehand?

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