feat: Initial implementation (fixes #1)

.gitlab-ci.yml

+build image:
+  tags:
+    - ecgalaxy-image
+  script:
+    - docker login -u ${CI_REGISTRY_USER} -p ${CI_JOB_TOKEN} ${CI_REGISTRY}
+    - IMAGE_NAME=${CI_REGISTRY}/${CI_PROJECT_NAMESPACE}/${CI_PROJECT_NAME}
+    - IMAGE_TAG=$(git describe --tags --abbrev=0)-$(date "+%y%m%d%H%M%S")
+    - docker build -t ${IMAGE_NAME}:${IMAGE_TAG} -f Dockerfile .
+    - docker tag ${IMAGE_NAME}:${IMAGE_TAG} ${IMAGE_NAME}:latest
+    - docker push ${IMAGE_NAME}:${IMAGE_TAG}
+    - docker push ${IMAGE_NAME}:latest

Dockerfile

+FROM geerlingguy/docker-ubuntu2404-ansible:latest
+LABEL maintainer="DIGIT-ECGALAXY@ec.europa.eu"
+
+ENV ANSIBLE_USER=ansible SUDO_GROUP=sudo DEPLOY_GROUP=deployer
+
+RUN set -xe && \
+  groupadd -r ${ANSIBLE_USER} && \
+  groupadd -r ${DEPLOY_GROUP} && \
+  useradd -m -g ${ANSIBLE_USER} ${ANSIBLE_USER} && \
+  usermod -aG ${SUDO_GROUP} ${ANSIBLE_USER} && \
+  usermod -aG ${DEPLOY_GROUP} ${ANSIBLE_USER} && \
+  sed -i "/^%${SUDO_GROUP}/s/ALL\$/NOPASSWD:ALL/g" /etc/sudoers && \
+  chown -R ${ANSIBLE_USER}:${ANSIBLE_USER} /home/${ANSIBLE_USER}

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README.md

+# Ubuntu 24.04 LTS (Noble) Ansible Test Image
+
+Ubuntu 24.04 LTS (Noble) Docker image for Ansible playbook and role testing,
+based on geerlingguy/docker-ubuntu2404-ansible and adding a specific non-root user.