Build cache fix

[chouseknecht]

ISSUE TYPE

• Bugfix Pull Request

SUMMARY

Fixes #671

Add to the hash any variables passed to the role on the container.yml line used to invoke it.

With this fix, ansible-container --debug build yields the following playbook output:

ok: [mongo]
META: ran handlers

TASK [setup_role : Show which_container] ***************************************
task path: /src/roles/setup_role/tasks/main.yml:1
ok: [mongo] => {
    "which_container": "mongo"
}

TASK [setup_role : Show current host] ******************************************
task path: /src/roles/setup_role/tasks/main.yml:4
ok: [mongo] => {
    "inventory_hostname": "mongo"
}
META: ran handlers
META: ran handlers

PLAY RECAP *********************************************************************
mongo                      : ok=3    changed=0    unreachable=0    failed=0

ok: [tomee]
META: ran handlers

TASK [setup_role : Show which_container] ***************************************
task path: /src/roles/setup_role/tasks/main.yml:1
ok: [tomee] => {
    "which_container": "tomee"
}

TASK [setup_role : Show current host] ******************************************
task path: /src/roles/setup_role/tasks/main.yml:4
ok: [tomee] => {
    "inventory_hostname": "tomee"
}
META: ran handlers
META: ran handlers

PLAY RECAP *********************************************************************
tomee                      : ok=3    changed=0    unreachable=0    failed=0

Both images were built, and here are the tagged images:

REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
tstfoo-tomee        20170804191541      2eb9b66cc877        11 minutes ago      193MB
tstfoo-tomee        latest              2eb9b66cc877        11 minutes ago      193MB
tstfoo-mongo        20170804191537      f051343c4c44        11 minutes ago      193MB
tstfoo-mongo        latest              f051343c4c44        11 minutes ago      193MB
tstfoo-conductor    latest              ae4ba36c5345        About an hour ago   546MB

[j00bar]

You're doing this in the right place and it looks good. You might also want to grab the resolved-at-the-service-level-variables and include them in the hash here:

https://github.com/ansible/ansible-container/blob/3cb3cdb/container/core.py#L665