Create a docker-compose with loop in ansible - docker-compose

Question

I need to build a docker compose based on a yml file. In the next yml it will be the name, the image and the version of each service.
"services":
- "service": "front"
"image": "acalls-caselog-web-app"
"version": "latest"
- "service": "back"
"image": "acalls-caselog-web-service"
"version": "latest"
- "service": "vb"
"image": "acalls-caselog-vb-service"
"version": "latest"
- "service": "salesforce"
"image": "acalls-caselog-salesforce-app-service"
"version": "latest"
- "service": "tts"
"image": "ydilo-tts-service"
"version": "latest"
- "service": "ai classifier"
"image": "acalls-caselog-ai-classifier-service"
"version": "latest"
Up to now I had an array to set each image in the docker compose, like this
version: "3.3"
services:
front:
image: url/{{services[0].image}}:{{services[0].version}}
ports:
- "81:81"
extra_hosts:
- "backend:172.32.3.46"
environment:
profile: preproduction
back:
image: url/{{services[1].image}}:{{services[1].version}}
ports:
- "20101:20101"
environment:
profile: preproduction
saleforce:
image: url/{{services[2].image}}:{{services[2].version}}
ports:
- "20103:20103"
environment:
profile: preproduction
But I need to find a way to make this dynamically with a loop in the ansible task, for example, without the array position in the docker-compose file.
Main.yml
---
- name: stop container
ignore_errors: yes
become: True
shell:
cmd: "docker-compose down"
chdir: dir
- name: set docker-compose
template:
src: docker-compose-acalls.yml.j2
dest: dir/docker-compose.yml
mode: 0700
- name: Run container
become: True
shell:
cmd: "nohup docker-compose -f docker-compose.yml up -d"
chdir: dir

Answer 1

you create a template file: you have to play with whitespace , %- and -% to adjust the position, i have just given the general idea
version: "3.3"
services:
{% for item in services %}
{{ item.service }}:
{% if item.image is defined %}
image: url/{{item.image}}:{{item.version}}
{%- endif %}
{% if item.ports is defined %}
ports:
- "{{ item.ports[0] }}"
{%- endif %}
{% if item.extra_hosts is defined %}
extra_hosts:
- "{{ item.extra_hosts[0] }}"
{%- endif %}
{% if item.environment is defined %}
environment:
- profile: {{ item.environment.profile }}
{% endif %}
{% endfor %}
your playbook:
- name: test
hosts: localhost
vars_files:
- reference.yml
tasks:
template:
src: fileconf.j2
dest: composedocker.yml
and your reference.yml file:
services:
- service: "front"
image: "acalls-caselog-web-app"
ports:
- "81:81"
extra_hostss:
- "backend:172.32.3.46"
environment:
profile: preproduction
version: "latest"
- service: "back"
image: "acalls-caselog-web-service"
version: "latest"
ports:
- "20101:20101"
environment:
profile: preproduction
- service: "vb"
image: "acalls-caselog-vb-service"
version: "latest"
- service: "salesforce"
image: "acalls-caselog-salesforce-app-service"
version: "latest"
ports:
- "20103:20103"
environment:
profile: preproduction
- service: "tts"
image: "ydilo-tts-service"
version: "latest"
- service: "ai classifier"
image: "acalls-caselog-ai-classifier-service"
version: "latest"
result:
version: "3.3"
services:
front:
image: url/acalls-caselog-web-app:latest
ports:
- "81:81"
extra_hosts:
- "backend:172.32.3.46"
environment:
- profile: preproduction
back:
image: url/acalls-caselog-web-service:latest
ports:
- "20101:20101"
environment:
- profile: preproduction
vb:
image: url/acalls-caselog-vb-service:latest
salesforce:
image: url/acalls-caselog-salesforce-app-service:latest
ports:
- "20103:20103"
environment:
- profile: preproduction
tts:
image: url/ydilo-tts-service:latest
ai classifier:
image: url/acalls-caselog-ai-classifier-service:latest