Week 06: Containerisation and YAML
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Agenda
YAML
Engine commands & Compose orchestrator (Demo)
Iteration 05
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Let's start
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YAML
users:
name:
Pavol
surname: Habera
pseudonym: Porodca
songs:
- Je to vo hviezdach
name:
Jan
surname: Pokorný
pseudonym: Pokáč
songs:
- Matfyzák na discu
name:
Braňo
surname: Mojsej
pseudonym: Braňo
songs:
- Dal by Som Si Teba
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Best practices for Containerfiles
Image should be as small as possible
Use official base image
Use image with lowest amount of vulnerabilities
Do not use root user
Do COPY as a last step
Make context as small as possible with .dockerignore
Use healthcheck when possible
Do not include development tools, packages inside of the image
Handle exit codes in your application
Use array syntax for CMD and ENTRYPOINT
Use fixed tags with versions/hashes
1 process per Container
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Hands on: Demo
Download demo from Interactive syllabus
Read index.md
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Hands on: Iteration 05
You can find the assignment in GitLab issues as well as in the interactive syllabus.
Let's take a look together.
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Before you start:
Please check whether your tutor has already accepted your MR
If they have, make sure you have merged your solution from the previous week
Note: if your tutor has not seen your MR, it's completely ok. You do not need to have the previous iteration
merged to be able to work on a new one - iterations are independent. However, if you do have an accepted
MR that still has not been merged, make sure to merge it first.
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