feat: add version number to images

.github/workflows/main.yaml

@@ -11,15 +11,24 @@ defaults:
     shell: 'bash -Eeuo pipefail {0}'
 
 jobs:
+  prepare:
+    runs-on: ubuntu-22.04
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - uses: actions/checkout@v3
+      - name: Generate matrix
+        id: set-matrix
+        run: |
+          images_json_obj="$(./generate-matrix.sh)"
+          echo "matrix=${images_json_obj}" | tee -a $GITHUB_OUTPUT
+
   main:
+    needs: prepare
     runs-on: ubuntu-22.04
     strategy:
-      matrix:
-        image:
-          - 'package_cloud'
-          - 'certgen'
-          - 'gitlint'
-          - 'selenium-chrome'
+      fail-fast: false
+      matrix: ${{ fromJson(needs.prepare.outputs.matrix) }}
 
     steps:
       - uses: actions/checkout@v3
@@ -36,6 +45,6 @@ jobs:
         with:
           push: true
           platforms: linux/amd64,linux/arm64
-          tags: ghcr.io/emqx/${{ matrix.image }}
-          file: ${{ matrix.image }}/Dockerfile
-          context: ${{ matrix.image }}
+          tags: ghcr.io/emqx/${{ matrix.image[0] }}:${{ matrix.image[1] }}
+          file: ${{ matrix.image[0] }}/Dockerfile
+          context: ${{ matrix.image[0] }}

Makefile

@@ -6,13 +6,13 @@ all: $(IMAGES)
 .PHONY: $(IMAGES)
 define gen-build-image-target
 $1:
-	@docker build -t ghcr.io/emqx/$1 $1
+	@docker build -t ghcr.io/emqx/$1:$(shell cat $1/vsn) $1
 endef
 $(foreach img,$(IMAGES),$(eval $(call gen-build-image-target,$(img))))
 
 .PHONY: $(IMAGES:%=%-push)
 define gen-push-image-target
 $1-push:
-	@docker push ghcr.io/emqx/$1
+	@docker push ghcr.io/emqx/$1:$(shell cat $1/vsn)
 endef
 $(foreach img,$(IMAGES),$(eval $(call gen-push-image-target,$(img))))

README.md

@@ -2,6 +2,7 @@
 
 To add an image:
 - create corresponding directory with Dockerfile
+- Add a `vsn` file in the directory (bump vsn whenver there is a change)
 - update [main.yaml](./.github/workflows/main.yaml)
 
 There is also a generic `Makefile` for local usage:

certgen/vsn

@@ -0,0 +1 @@
+1.0.0

generate-matrix.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -euo pipefail
+
+IMGS=''
+
+while read dir; do
+    vsn=$(cat "${dir}/vsn")
+    img="[\"$dir\", \"$vsn\"]"
+    if [ -n "$IMGS" ]; then
+        IMGS="${IMGS},${img}"
+    else
+        IMGS="${img}"
+    fi
+done < <(find . -type f -name 'Dockerfile' -printf '%h\n' | sed 's|./||')
+
+echo "{\"image\":[${IMGS}]}"

gitlint/vsn

@@ -0,0 +1 @@
+1.0.0

package_cloud/vsn

@@ -0,0 +1 @@
+1.0.0

selenium-chrome/vsn

@@ -0,0 +1 @@
+1.0.0