Sometimes we need to build Dockerfile to the docker image and push it to registry in CI pipeline. For instance, my development environment is windows/amd64, but my VPS is linux/arm64. At the end, I want to host the service in my VPS. Thus, it will be easy to build the docker image inside the CI pipeline.
In this post, I will show how to configure the pipeline to build and push docker image in DroneCI, which is a self-service Continuous Integration platform for busy development teams.
Take a real case as the example. The project is a static website generated by Hugo and I need to host it in the docker container. Therefore, building the docker image in CI comes into the play.
Let’s create a file called .drone.yml under the root directory of the git repository. Add the below content into the file.
1---
2kind: pipeline
3type: docker
4name: hugo-build-deploy
5
6volumes:
7- name: hugosource
8 host:
9 path: "/drone/src"
10- name: dockersock
11 host:
12 path: /var/run/docker.sock
13
14platform:
15 os: linux
16 arch: amd64
17
18steps:
19- name: hugo-build
20 image: klakegg/hugo:0.92.2
21 volumes:
22 - name: hugosource
23 path: "/src"
24 commands:
25 - hugo
26 - ls ./public # ./public is the output folder for all static files generated by hugo
27
28- name: build-and-push-image
29 image: plugins/docker
30 volumes:
31 - name: hugosource
32 path: "/src"
33 - name: dockersock
34 path: "/var/run/docker.sock" # Mandatory
35 settings:
36 username: <dockerhub username>
37 password:
38 from_secret: docker_hub_pwd # Configure the secret in the Drone repository setting
39 repo: <dockerhub user>/<repo>
40 tags: 0.0.1
41 dockerfile: ./build/Dockerfile # Where the Dockerfile is located in your git repository
42
43trigger:
44 branch:
45 - master
We can see that we take advantage of the docker plugins in the step build-and-push-image. Basically it will do the following in sequence.
