1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
# Based on: https://github.com/docker/build-push-action/blob/master/docs/advanced/test-before-push.md
# Trigger and tag naming rules are based on the settings we were previously using at Docker Hub.
name: Packaging Docker
on:
push:
branches:
- main
tags:
- 'v[0-9]+.[0-9]+.[0-9]+'
- 'v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+'
jobs:
build:
runs-on: ubuntu-latest
steps:
- name: Checkout repository
uses: actions/checkout@v2
- name: Extract metadata for tagging the Docker image
id: meta
uses: docker/metadata-action@v3
with:
images: nlnetlabs/routinator
flavor: |
latest=false
tags: |
type=semver,pattern={{version}},prefix=v
type=raw,value=unstable,enable=${{ github.ref == 'refs/heads/main' }}
type=raw,value=latest,enable=${{ github.ref != 'refs/heads/main' && !contains(github.ref, '-') }}
- name: Log into Docker Hub
uses: docker/login-action@v1
with:
username: ${{ secrets.DOCKER_HUB_ID }}
password: ${{ secrets.DOCKER_HUB_TOKEN }}
# Build the image and tag it with a test tag we can use in the subsequent step when we invoke 'docker run'.
- name: Build Docker image
uses: docker/build-push-action@v2
with:
context: .
platforms: linux/amd64
push: false
load: true
tags: nlnetlabs/routinator:sanitycheck
# Do a basic sanity check of the created image using the test tag to select the image to run.
- name: Sanity check
run: |
docker run --rm nlnetlabs/routinator:sanitycheck --version
# Push the image and tags to Docker Hub.
# The build uses the cached build outputs from the step above so we don't have to wait for the build again.
#
# On push of a tag to refs/tags/v1.2.3 the Docker tags will be 'v1.2.3' and 'latest' because of:
# type=semver,pattern={{version}},prefix=v
# type=raw,value=latest,enable=${{ github.ref != 'refs/heads/main' && !contains(github.ref, '-') }}
# ^^^^^^^^^^^^^ true, not main ^^^^^^^^^ true, no dash found
#
# Note: we don't use semver,pattern={{raw}} because while that preserves the leading v in v1.2.3 it
# discards the leading v in v1.2.3-rc4.
#
# On push of a tag to refs/tags/v1.2.3-rc1 the Docker tags will be 'v1.2.3' but NOT 'latest' because of:
# type=semver,pattern={{raw}}
# type=raw,value=latest,enable=${{ github.ref != 'refs/heads/main' && !contains(github.ref, '-') }}
# ^^^^^^^^^^^^^ true, not main ^^^^^^^^^ false, dash found
#
# On push to refs/heads/main the Docker tag will be 'unstable' because of:
# type=raw,value=unstable,enable=${{ github.ref == 'refs/heads/main' }}
- name: Push built Docker image to Docker Hub
uses: docker/build-push-action@v2
with:
context: .
platforms: linux/amd64
push: true
tags: ${{ steps.meta.outputs.tags }}