Error while running postgres on ubuntubase docker

Question

I'm practicing the examples provided in book Docker in Practice chapter 3. Below is the Dockerfile mentioned to run docker with postgres.

FROM ubuntu:14.04
RUN apt-get update \
   && DEBIAN_FRONTEND=noninteractive  apt-get install -y \
   postgresql \
   && apt-get clean \
   && rm -rf /var/lib/apt/lists/*
WORKDIR /opt
COPY db /opt/db
RUN service postgresql start && \
   cat db/schema.sql | psql && \
   service postgresql stop

But the copy in the step 4 gives me the below error.

 $ sudo docker build -t db .
 Sending build context to Docker daemon  2.048kB
 Step 1/4 : FROM ubuntu:14.04
 ---> c69811d4e993
 Step 2/4 : RUN apt-get update     && DEBIAN_FRONTEND=noninteractive  
 apt-get install -y     postgresql     && apt-get clean     && rm -rf 
 /var/lib/apt/lists/*
 ---> Using cache
 ---> 2ac4ff885d29
 Step 3/4 : COPY db /opt/db
 COPY failed: stat /var/lib/docker/tmp/docker-builder554911929/db: no such file or directory

when I commented the COPY command, I'm getting different error.

 Step 4/4 : RUN service postgresql start &&     cat db/schema.sql | psql &&     service postgresql stop
 ---> Running in 79e47b45c41a
* Starting PostgreSQL 9.3 database server
 ...done.
 cat: db/schema.sql: No such file or directory
 psql: FATAL:  role "root" does not exist

VonC · Accepted Answer · 2017-09-11 05:34:07Z

1

COPY db /opt/db is supposed to copy db from your current context (the folder you are executing docker build from)

So make sure said current folder does actually include the db folder.

answered Sep 11, 2017 at 5:34

VonC

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