{"id":27171012,"url":"https://github.com/adamdawi/lab5-docker","last_synced_at":"2025-04-09T08:22:17.922Z","repository":{"id":285203090,"uuid":"954660958","full_name":"AdamDawi/lab5-docker","owner":"AdamDawi","description":"A Dockerfile using multi-stage builds to create a simple web app with a scratch base image and Nginx, displaying server IP, hostname, and app version. 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Copying `package.json` before the application code (`index.js`):\n - Docker caches the `RUN npm install` layer if `package.json` remains unchanged.\n - This means that if only `index.js` is modified, re-installing dependencies is not required, significantly speeding up the build process.\n - Each `RUN` and `COPY` instruction creates a new layer – using two separate `COPY` instructions (first for `package.json`, then for the application code) increases the number of layers but allows better caching, which speeds up future builds. It's a trade-off between optimization and flexibility.\n\n#### Command to build the image:\n```bash\ndocker build --build-arg VERSION=1.0.1 -f Dockerfile_stage_1 -t task_1 .\n```\n\n#### Output of the build command:\n```\n[+] Building 1.9s (10/10) FINISHED\n[...output truncated for brevity...]\n```\n\n#### Command to run the container:\n```bash\ndocker run -d --rm --name task_1_test -p 8080:8080 task_1\n```\n\n#### Output of the run command:\n```\nc40a3b6b0564bce7b409836767d4462fad7cbb4749810869352a50bbda2000d3\n```\n\n#### Command to display running containers:\n```bash\ndocker ps\n```\n\n#### Output of the ps command:\n```\nCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES\nc40a3b6b0564 task_1 \"npm start\" About a minute ago Up About a minute 0.0.0.0:8080-\u003e8080/tcp task_1_test\n```\n\n#### Screenshot showing the running web app:\n![Image](https://github.com/user-attachments/assets/136db71a-4f4a-4119-a8cb-932ceb5c4094)\n\n---\n\n### Stage Two in Dockerfile (stage 1 and 2)\n\n#### Command to build the image:\n```bash\ndocker build --build-arg VERSION=1.0.1 -f Dockerfile_stage_1_and_2 -t task_2 .\n```\n\n#### Output of the build command:\n```\n[+] Building 8.2s (16/16) FINISHED\n[...output truncated for brevity...]\n```\n\n#### Command to run the container:\n```bash\ndocker run -d --rm --name task_2_test -p 80:80 task_2\n```\n\n#### Output of the run command:\n```\nf8edb21b1cd622fc36137e8169fa60eabfca003f0003072fea4a2b063f8e9638\n```\n\n#### Command to display running containers:\n```bash\ndocker ps\n```\n\n#### Output of the ps command:\n```\nCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES\nf8edb21b1cd6 task_2 \"/docker-entrypoint.…\" 46 seconds ago Up 46 seconds (healthy) 0.0.0.0:80-\u003e80/tcp, 8080/tcp task_2_test\n```\n\n#### Screenshot showing the running web app:\n![Image](https://github.com/user-attachments/assets/afa5ff55-54ed-4597-b52d-16ee7406e610)\n\n## Wersja polska\n\n### Etap pierwszy w pliku Dockerfile (stage 1)\n#### Tworzenie pliku Dockerfile_stage_1:\n1. Kopiowanie package.json przed kodem aplikacji (index.js)\n - Docker buforuje warstwę RUN npm install, jeśli package.json pozostaje bez zmian.\n - Dzięki temu, jeśli zostanie zmodyfikowany tylko index.js, ponowna instalacja zależności nie będzie konieczna, co znacząco przyspieszy budowanie obrazu.\n - Każda instrukcja RUN i COPY tworzy nową warstwę – użycie dwóch oddzielnych COPY (najpierw package.json, potem kod aplikacji) zwiększa liczbę warstw, ale pozwala na lepsze wykorzystanie cache, co przyspiesza kolejne budowy obrazu. To kompromis między optymalizacją a elastycznością.\n\n#### Polecenie do zbudowania obrazu:\n```bash\ndocker build --build-arg VERSION=1.0.1 -f Dockerfile_stage_1 -t zadanie_1 .\n```\n#### Wynik działania polecenia build:\n```\n[+] Building 1.9s (10/10) FINISHED docker:desktop-linux\n =\u003e [internal] load build definition from Dockerfile_stage_1 0.0s\n =\u003e =\u003e transferring dockerfile: 638B 0.0s\n =\u003e [internal] load .dockerignore 0.0s\n =\u003e =\u003e transferring context: 671B 0.0s\n =\u003e [internal] load build context 0.0s\n =\u003e =\u003e transferring context: 1.92kB 0.0s\n =\u003e CACHED [1/6] ADD alpine-minirootfs-3.21.3-aarch64.tar / 0.0s\n =\u003e CACHED [2/6] WORKDIR /usr/app 0.0s\n =\u003e CACHED [3/6] RUN apk add --no-cache nodejs npm 0.0s\n =\u003e CACHED [4/6] COPY ./package.json ./ 0.0s\n =\u003e CACHED [5/6] RUN npm install 0.0s\n =\u003e [6/6] COPY ./index.js ./ 0.1s\n =\u003e exporting to image 1.6s\n =\u003e =\u003e exporting layers 0.1s\n =\u003e =\u003e exporting manifest sha256:126ffebcfb420ff9c8d86bc6585424c1fdf2de569eeb28689a58baff9f94ea61 0.0s\n =\u003e =\u003e exporting config sha256:fd6548265e0357c88f11aeda64cfaf87f73c0bdd7412e871d8117b5caf0e6672 0.0s\n =\u003e =\u003e exporting attestation manifest sha256:965a2e424a47df2642ee8ef4304237b9e59d2b745927db942af8c8cc2db0613b 0.0s \n =\u003e =\u003e exporting manifest list sha256:503ef94b2b6568f04ed942ced269b125609fa7e0f7059667e68c2649a6709ddf 0.0s \n =\u003e =\u003e naming to docker.io/library/zadanie_1:latest 0.0s \n =\u003e =\u003e unpacking to docker.io/library/zadanie_1:latest 1.3s \n\nView build details: docker-desktop://dashboard/build/desktop-linux/desktop-linux/vif5ezpwmclv5nqj2xj00egjp\n```\n\n#### Polecenie do uruchomienia kontenera:\n```bash\ndocker run -d --rm --name zadanie_1_test -p 8080:8080 zadanie_1\n```\n#### Wynik działania polecenia run:\n```\nc40a3b6b0564bce7b409836767d4462fad7cbb4749810869352a50bbda2000d3\n```\n\n#### Polecenie do wyświetlenia uruchomionych kontenerów:\n```bash\ndocker ps\n```\n#### Wynik działania polecenia ps:\n```\nCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES\nc40a3b6b0564 zadanie_1 \"npm start\" About a minute ago Up About a minute 0.0.0.0:8080-\u003e8080/tcp zadanie_1_test\n```\n\n#### Zdjęcie pokazujące działanie aplikacji webowej:\n![Image](https://github.com/user-attachments/assets/136db71a-4f4a-4119-a8cb-932ceb5c4094)\n\n### Etap drugi w pliku Dockerfile (stage 1 i 2)\n\n#### Polecenie do zbudowania obrazu:\n```bash\ndocker build --build-arg VERSION=1.0.1 -f Dockerfile_stage_1_and_2 -t zadanie_2 .\n```\n\n#### Wynik działania polecenia build:\n```\n[+] Building 8.2s (16/16) FINISHED docker:desktop-linux \n =\u003e [internal] load build definition from Dockerfile_stage_1_and_2 0.0s \n =\u003e =\u003e transferring dockerfile: 1.24kB 0.0s \n =\u003e [internal] load metadata for docker.io/library/nginx:latest 0.0s \n =\u003e [internal] load .dockerignore 0.0s \n =\u003e =\u003e transferring context: 671B 0.0s \n =\u003e [internal] load build context 0.0s \n =\u003e =\u003e transferring context: 151B 0.0s \n =\u003e [stage-1 1/5] FROM docker.io/library/nginx:latest@sha256:124b44bfc9ccd1f3cedf4b592d4d1e8bddb78b51ec2ed5056c52d3692baebc19 0.0s \n =\u003e =\u003e resolve docker.io/library/nginx:latest@sha256:124b44bfc9ccd1f3cedf4b592d4d1e8bddb78b51ec2ed5056c52d3692baebc19 0.0s \n =\u003e CACHED [stage-1 2/5] RUN apt update \u0026\u0026 apt install -y curl nodejs npm 0.0s \n =\u003e CACHED [stage-1 3/5] WORKDIR /usr/app 0.0s \n =\u003e CACHED [build-stage 1/6] ADD alpine-minirootfs-3.21.3-aarch64.tar / 0.0s \n =\u003e CACHED [build-stage 2/6] WORKDIR /usr/app 0.0s \n =\u003e CACHED [build-stage 3/6] RUN apk add --no-cache nodejs npm 0.0s \n =\u003e CACHED [build-stage 4/6] COPY ./package.json ./ 0.0s \n =\u003e CACHED [build-stage 5/6] RUN npm install 0.0s\n =\u003e CACHED [build-stage 6/6] COPY ./index.js ./ 0.0s\n =\u003e CACHED [stage-1 4/5] COPY --from=build-stage /usr/app /usr/app 0.0s\n =\u003e CACHED [stage-1 5/5] COPY default.conf /etc/nginx/conf.d/default.conf 0.0s\n =\u003e exporting to image 8.0s\n =\u003e =\u003e exporting layers 0.0s\n =\u003e =\u003e exporting manifest sha256:7a11ded8b717a99e800efe7a50e959eea4a5956696b10a745d590a628572bf6a 0.0s\n =\u003e =\u003e exporting config sha256:7dfe85cce9393b68c77f297c43cd0c60d3a2250f19ddce2aa5a502f78ef68f53 0.0s\n =\u003e =\u003e exporting attestation manifest sha256:2143cad27cac540d7f839e8c582b9630b5af246f0a71ddee3fe2487d4347d633 0.0s\n =\u003e =\u003e exporting manifest list sha256:1da4637486e3023ed226c7462a3340c1fe43442cd2c9ca17fc9a815e63c38f00 0.0s \n =\u003e =\u003e naming to docker.io/library/zadanie_2:latest 0.0s \n =\u003e =\u003e unpacking to docker.io/library/zadanie_2:latest 7.9s \n\nView build details: docker-desktop://dashboard/build/desktop-linux/desktop-linux/g8q78wfz3ny7a0rjxu0puqpj8\n```\n\n#### Polecenie do uruchomienia kontenera:\n```bash\ndocker run -d --rm --name zadanie_2_test -p 80:80 zadanie_2\n```\n#### Wynik działania polecenia run:\n```\nf8edb21b1cd622fc36137e8169fa60eabfca003f0003072fea4a2b063f8e9638\n```\n\n#### Polecenie do wyświetlenia uruchomionych kontenerów:\n```bash\ndocker ps\n```\n#### Wynik działania polecenia ps:\n```\nCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES\nf8edb21b1cd6 zadanie_2 \"/docker-entrypoint.…\" 46 seconds ago Up 46 seconds (healthy) 0.0.0.0:80-\u003e80/tcp, 8080/tcp zadanie_2_test\n```\n\n#### Zdjęcie pokazujące działanie aplikacji webowej:\n![Image](https://github.com/user-attachments/assets/afa5ff55-54ed-4597-b52d-16ee7406e610)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fadamdawi%2Flab5-docker","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fadamdawi%2Flab5-docker","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fadamdawi%2Flab5-docker/lists"}