Dockerfile to run Ansible playbooks

This is the simplest Dockerfile able to run Ansible playbooks.

I’m assuming that this Dockerfile is on the same directory/repository as your ansible files.

Dockerfile

FROM alpine:3.16.0

COPY . /ansible

WORKDIR /ansible

RUN apk add --update-cache \
      python3=3.10.4-r0 \
      py3-pip=22.1.1-r0 \
      openssh-client==9.0_p1-r1 && \
    rm -rf /var/cache/apk/*

RUN pip3 install -r requirements.txt

requirements.txt

ansible==6.1.0
ansible-core==2.13.1
appdirs==1.4.4
boto3==1.24.31
botocore==1.27.31
cffi==1.15.1
contextlib2==21.6.0
cryptography==37.0.4
Jinja2==3.1.2
jmespath==1.0.1
MarkupSafe==2.1.1
more-itertools==8.13.0
ordered-set==4.0.2
packaging==21.3
pep517==0.12.0
pip==22.1.1
pycparser==2.21
pyparsing==2.4.7
python-dateutil==2.8.2
PyYAML==6.0
resolvelib==0.8.1
retrying==1.3.3
s3transfer==0.6.0
setuptools==59.4.0
six==1.16.0
tomli==2.0.1
urllib3==1.26.10

Example of .dockerignore. Docker will ignore these files during the image build and will not copy it to the container.

/.vscode/
Makefile
Dockerfile
.dockerignore
.gitlab-ci.yml
.git
.gitignore

As a plus, here you can find a Makefile to help to build, run and few other tasks. During the run, this Makefile gets AWS credentials for your local configuration and export it to the container using environment variables. You can also change your private key before run make run.

.ONESHELL :

CURRENT_DIR := $(shell pwd)
CONTAINER_NAME := "ansible"
CONTAINER_IMAGE := "ansible:6.1.0"
CONTAINER_APP_DIR := "/ansible"
AWS_ACCESS_KEY_ID := $(if $(AWS_ACCESS_KEY_ID),$(AWS_ACCESS_KEY_ID),$(shell aws --profile default configure get aws_access_key_id))
AWS_SECRET_ACCESS_KEY := $(if $(AWS_SECRET_ACCESS_KEY),$(AWS_SECRET_ACCESS_KEY),$(shell aws --profile default configure get aws_secret_access_key))
SSH_PRIVATE_KEY := $(HOME)/.ssh/id_rsa

# HELP
# This will output the help for each task
# thanks to https://marmelab.com/blog/2016/02/29/auto-documented-makefile.html
.PHONY: help
help: ## This help.
        @awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_-]+:.*?## / {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)

.DEFAULT_GOAL := help

# DOCKER TASKS
.PHONY : build
build: ## Build the container
        @echo Building $(CONTAINER_IMAGE)
        @docker build -t $(CONTAINER_IMAGE) .

.PHONY : run
run: ## Run the container
        @echo Running $(CONTAINER_IMAGE)
        @docker run --rm \
                -e AWS_ACCESS_KEY_ID=$(AWS_ACCESS_KEY_ID) \
                -e AWS_SECRET_ACCESS_KEY=$(AWS_SECRET_ACCESS_KEY) \
                -v $(SSH_PRIVATE_KEY):/root/.ssh/id_rsa \
                -w $(CONTAINER_APP_DIR) \
                --name $(CONTAINER_NAME) \
                -it $(CONTAINER_IMAGE) sh

.PHONY : stop
stop: ## Stops the container
        @echo Stopping $(CONTAINER_IMAGE)
        @docker stop $(CONTAINER_NAME)

.PHONY : rm
rm: ## Removes the container
        @echo Removing $(CONTAINER_IMAGE)
        @docker rm -f $(CONTAINER_NAME)

Dyego Eugenio / Dockerfile to run Ansible playbooks