Martin Lutzkanov - Docker exercise 1

.python-version

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+3.11.8

Dockerfile

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+FROM ubuntu:22.04
+
+RUN apt-get update \ 
+    && apt-get install -y --no-install-recommends \
+    python3 \
+    python3-pip \
+    curl \
+    && mkdir /app \
+    && useradd -d /app app-user \
+    && chown --recursive app-user /app
+
+COPY app/requirements.txt /app/requirements.txt
+RUN pip3 install -r app/requirements.txt
+
+COPY app/app.py /app
+WORKDIR /app
+
+EXPOSE 5000
+
+USER app-user
+
+CMD [ "python3", "app.py" ]

ansible/playbook.yml

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+- hosts: localhost
+  become: no
+
+  vars:
+    image_name: "mlutzkan/test-python-app"
+    image_tag: "v0.2"
+    application_directory: "/tmp/app"
+
+  tasks:
+    - name: Create {{ application_directory }} directory
+      file:
+        name: "{{ application_directory }}"
+        state: directory
+        mode: 0755
+
+    - name: Checkout repository
+      git:
+        repo: [email protected]:lutzkanov/devops-programme
+        dest: "{{ application_directory }}"
+        version: lutzkanov_docker_1
+        update: yes
+
+    - name: Build Docker image
+      docker_image:
+        build:
+          path: "{{ application_directory }}"
+        name: "{{ image_name }}"
+        tag: "{{ image_tag }}"
+        push: true
+        source: build
+        docker_host: "unix:///var/run/docker.sock"
+        state: present
+
+    - name: Run the built Docker image
+      docker_container:
+        name: "python-web"
+        image: "{{ image_name }}:{{ image_tag }}"
+        state: started
+        auto_remove: yes
+        ports:
+          - "5001:5001"
+        env:
+          PORT: "5001"
+        healthcheck:
+          test: ["CMD", "curl", "--fail", "http://localhost:5001"]
+          interval: 10s
+          retries: 3
+          start_period: 5s
+        docker_host: "unix:///var/run/docker.sock"

app/app.py

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+import os
+
+from flask import Flask
+
+app = Flask(__name__)
+
+
+@app.route("/")
+def hello_world():
+    return "Hello, World!"
+
+
+if __name__ == "__main__":
+    app.run(port=os.environ.get("PORT", 5000), host="0.0.0.0")

requirements.txt

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+ansible==10.3.0
+ansible-compat==24.9.1
+ansible-core==2.17.5
+ansible-lint==24.9.2
+blinker==1.6.3 ; python_version >= "3.10" and python_version < "4.0"
+click==8.1.7 ; python_version >= "3.10" and python_version < "4.0"
+colorama==0.4.6 ; python_version >= "3.10" and python_version < "4.0" and platform_system == "Windows"
+flask==3.0.0 ; python_version >= "3.10" and python_version < "4.0"
+itsdangerous==2.1.2 ; python_version >= "3.10" and python_version < "4.0"
+jinja2==3.1.2 ; python_version >= "3.10" and python_version < "4.0"
+markupsafe==2.1.3 ; python_version >= "3.10" and python_version < "4.0"
+werkzeug==3.0.0 ; python_version >= "3.10" and python_version < "4.0"