How to make a postgreSQL image postGIS enabled using Docker Dockerfile

Question

I followed the following steps to make my a custom image of postgresql database:

docker pull postgresql

Then

makdir postgresql
touch Dockerfile
sudo nano Dockerfile

Edited the docker file to be like below:

FROM ubuntu:14.04
MAINTAINER tenali<[email protected]>
RUN apt-get update
RUN docker pull mdillon/postgis

now when i do

sudo docker build -t gautam/postgresql:v2 .

I get the following error:

/bin/sh: 1: docker: not found

I guess what that's saying is the command docker does't exist in /bin/sh , i guess i am making a mistake in writing the Dockerfile. can you check my Dockerfile and tell me what am i doing wrong ?

So first, you don't need to run sudo to edit your Dockerfile (in fact, that will likely come back to bite you at some point), and secondly "docker: not found` suggets that you simply do not have docker installed at this time. It has nothing to do with the contents of your Dockerfile. — larsks
– larsks, Commented Aug 26, 2015 at 17:30
@larsks , if i run docker from the terminal , instead of writing a dockerfile , it runs fine — Tenali_raman
– Tenali_raman, Commented Aug 26, 2015 at 17:33

larsks · Accepted Answer · 2015-08-26 17:37:35Z

1

Sorry, the formatting of your post meant that I didn't notice your Dockerfile. I fixed that for you. You would not run docker pull inside a Dockerfile. What you probably want is something like:

FROM mdillon/postgis
MAINTAINER tenali<[email protected]>
RUN apt-get update

The FROM directive means, effectively, "pull this image if it doesn't already exist and use it as the base for the image I am creating with this Dockerfile".

It's not clear from your question what the relationship is between the postgresql image and the mdillon/postgis image, or why you're pulling one then using the other.

answered Aug 26, 2015 at 17:37

larsks

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3 Comments

Tenali_raman Over a year ago

i need my postgreSQL database to be postGIS enabled !! thats why i am pulling mdillon/postgis .. do you think i am going in the right direction as far as enableing my postgresql database is concerned(as i said i need to make it postGIS enabled) ?

larsks Over a year ago

According to the description, mdillon/postgis already is a postgis-enabled PostgreSQL installation.

Tenali_raman Over a year ago

! Danm ! missed that , ok how do i make a postgreSQL database image , postGIS enabled , i need to do this using dockerfile and i can't use mdillon/postgis ... sorry for the confusion

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