Cannot mount volume with docker-compose - docker

Question

I am trying to run up a docker container with a mounted local volume using docker-compose. In failure to get it working, I have reduced by docker-compose down to the most basic version:
version: '2'
services:
php:
image: php:5.6-apache
ports:
- "8080:80"
volumes:
- .:/var/www/html
Upon doing this the mount appears in docker inspect:
"Mounts": [
{
"Type": "bind",
"Source": "/home/clark/Projects/apis/contracts",
"Destination": "/var/www/html",
"Mode": "rw",
"RW": true,
"Propagation": ""
}
],
But /var/www/html directory on the container is empty.
I have tried every combination I can think of. Absolute paths, relative paths, ${pwd}, named volumes, mounting to a directory that exists, mounting to a directory that doesn't exist... It's driving me crazy.
PLEASE can someone tell me what I'm doing wrong???

Answer 1

Works here, the only difference is a version 3 docker-compose file.
mkdir /tmp/compose-test && cd /tmp/compose-test
touch iam_a_file
Docker compose file :
---
version: '3'
services:
test:
image: busybox
command: ls -la /var/www/html
volumes:
- .:/var/www/html
Ensure config is ok :
docker-compose config
Up all the stuff
docker-compose up
Creating composetest_test_1
Attaching to composetest_test_1
test_1 | total 8
test_1 | drwxr-xr-x 2 1000 users 80 Apr 26 16:47 .
test_1 | drwxr-xr-x 1 www-data www-data 4096 Apr 26 16:49 ..
test_1 | -rw-r--r-- 1 1000 users 126 Apr 26 16:48 docker-compose.yml
test_1 | -rw-r--r-- 1 1000 users 0 Apr 26 16:46 iam_a_file
Inspect show that when you provide a relative path, docker change it to a full path.
Edit: i also tried with php:5.6-apache, it works.