Update to a new template with improved caching

.github/workflows/image.yml

@@ -33,6 +33,3 @@ jobs:
         with:
           files: build/docker-bake.hcl
           push: true
-          set: |
-            *.cache-from=type=gha
-            *.cache-to=type=gha,mode=max

build/docker-bake.hcl

@@ -18,158 +18,218 @@ target "build-common" {
   pull = true
 }
 
+variable "REGISTRY_CACHE" {
+  default = "docker.io/nlss/s6-rootfs-cache"
+}
+
+######################
+# Define the functions
+######################
+
+# Get the arguments for the build
+function "get-args" {
+  params = [version]
+  result = {
+    S6_OVERLAY_VERSION = version
+  }
+}
+
+# Get the arguments for the build
+function "get-args-with-pak-ext" {
+  params = [version, pak_ext]
+  result = {
+    S6_OVERLAY_VERSION = version
+    S6_OVERLAY_PAK_EXT = pak_ext
+  }
+}
+
+# Get the cache-from configuration
+function "get-cache-from" {
+  params = [version]
+  result = [
+    "type=gha,scope=${version}_${BAKE_LOCAL_PLATFORM}",
+    "type=registry,ref=${REGISTRY_CACHE}:${sha1("${version}-${BAKE_LOCAL_PLATFORM}")}"
+  ]
+}
+
+# Get the cache-to configuration
+function "get-cache-to" {
+  params = [version]
+  result = [
+    "type=gha,mode=max,scope=${version}_${BAKE_LOCAL_PLATFORM}",
+    "type=registry,mode=max,ref=${REGISTRY_CACHE}:${sha1("${version}-${BAKE_LOCAL_PLATFORM}")}"
+  ]
+}
+
+# Get list of image tags and registries
+# Takes a version and a list of extra versions to tag
+# eg. get-tags("3.1.4.1", ["3.1", "latest"])
+function "get-tags" {
+  params = [version, extra_versions]
+  result = concat(
+    [
+      "docker.io/nlss/s6-rootfs:${version}"
+    ],
+    flatten([
+      for extra_version in extra_versions : [
+        "docker.io/nlss/s6-rootfs:${extra_version}"
+      ]
+    ])
+  )
+}
+
+##########################
+# Define the build targets
+##########################
+
 target "2_1_0_2" {
   inherits   = ["build-dockerfile-legacy", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:2.1.0.2", "docker.io/nlss/s6-rootfs:2.1"]
+  cache-from = get-cache-from("2.1.0.2")
-  args = {
+  cache-to   = get-cache-to("2.1.0.2")
-    S6_OVERLAY_VERSION = "2.1.0.2"
+  tags       = get-tags("2.1.0.2", ["2.1"])
-  }
+  args       = get-args("2.1.0.2")
 }
 
 target "2_2_0_0" {
   inherits   = ["build-dockerfile-legacy", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:2.2.0.0"]
+  cache-from = get-cache-from("2.2.0.0")
-  args = {
+  cache-to   = get-cache-to("2.2.0.0")
-    S6_OVERLAY_VERSION = "2.2.0.0"
+  tags       = get-tags("2.2.0.0", [])
-  }
+  args       = get-args("2.2.0.0")
 }
 
 target "2_2_0_1" {
   inherits   = ["build-dockerfile-legacy", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:2.2.0.1"]
+  cache-from = get-cache-from("2.2.0.1")
-  args = {
+  cache-to   = get-cache-to("2.2.0.1")
-    S6_OVERLAY_VERSION = "2.2.0.1"
+  tags       = get-tags("2.2.0.1", [])
-  }
+  args       = get-args("2.2.0.1")
 }
 
 target "2_2_0_2" {
   inherits   = ["build-dockerfile-legacy", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:2.2.0.2"]
+  cache-from = get-cache-from("2.2.0.2")
-  args = {
+  cache-to   = get-cache-to("2.2.0.2")
-    S6_OVERLAY_VERSION = "2.2.0.2"
+  tags       = get-tags("2.2.0.2", [])
-  }
+  args       = get-args("2.2.0.2")
 }
 
 target "2_2_0_3" {
   inherits   = ["build-dockerfile-legacy", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:2.2.0.3", "docker.io/nlss/s6-rootfs:2.2"]
+  cache-from = get-cache-from("2.2.0.3")
-  args = {
+  cache-to   = get-cache-to("2.2.0.3")
-    S6_OVERLAY_VERSION = "2.2.0.3"
+  tags       = get-tags("2.2.0.3", ["2.2"])
-  }
+  args       = get-args("2.2.0.3")
 }
 
 target "3_0_0_0" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.0.0.0", "docker.io/nlss/s6-rootfs:3.0.0.0-1"]
+  cache-from = get-cache-from("3.0.0.0-1")
-  args = {
+  cache-to   = get-cache-to("3.0.0.0-1")
-    S6_OVERLAY_VERSION = "3.0.0.0-1"
+  tags       = get-tags("3.0.0.0", ["3.0.0.0-1"])
-    S6_OVERLAY_PAK_EXT = "-3.0.0.0-1.tar.xz"
+  args       = get-args-with-pak-ext("3.0.0.0-1", "-3.0.0.0-1.tar.xz")
-  }
 }
 
 target "3_0_0_1" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.0.0.1"]
+  cache-from = get-cache-from("3.0.0.1")
-  args = {
+  cache-to   = get-cache-to("3.0.0.1")
-    S6_OVERLAY_VERSION = "3.0.0.1"
+  tags       = get-tags("3.0.0.1", [])
-    S6_OVERLAY_PAK_EXT = "-3.0.0.1.tar.xz"
+  args       = get-args-with-pak-ext("3.0.0.1", "-3.0.0.1.tar.xz")
-  }
 }
 
 target "3_0_0_2" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.0.0.2"]
+  cache-from = get-cache-from("3.0.0.2")
-  args = {
+  cache-to   = get-cache-to("3.0.0.2")
-    S6_OVERLAY_VERSION = "3.0.0.2"
+  tags       = get-tags("3.0.0.2", [])
-    S6_OVERLAY_PAK_EXT = "-3.0.0.2.tar.xz"
+  args       = get-args-with-pak-ext("3.0.0.2", "-3.0.0.2.tar.xz")
-  }
 }
 
 target "3_0_0_2-2" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.0.0.2-2", "docker.io/nlss/s6-rootfs:3.0"]
+  cache-from = get-cache-from("3.0.0.2-2")
-  args = {
+  cache-to   = get-cache-to("3.0.0.2-2")
-    S6_OVERLAY_VERSION = "3.0.0.2-2"
+  tags       = get-tags("3.0.0.2-2", ["3.0"])
-    S6_OVERLAY_PAK_EXT = "-3.0.0.2-2.tar.xz"
+  args       = get-args-with-pak-ext("3.0.0.2-2", "-3.0.0.2-2.tar.xz")
-  }
 }
 
 target "3_1_0_0" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.1.0.0"]
+  cache-from = get-cache-from("3.1.0.0")
-  args = {
+  cache-to   = get-cache-to("3.1.0.0")
-    S6_OVERLAY_VERSION = "3.1.0.0"
+  tags       = get-tags("3.1.0.0", [])
-  }
+  args       = get-args("3.1.0.0")
 }
 
 target "3_1_0_1" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.1.0.1"]
+  cache-from = get-cache-from("3.1.0.1")
-  args = {
+  cache-to   = get-cache-to("3.1.0.1")
-    S6_OVERLAY_VERSION = "3.1.0.1"
+  tags       = get-tags("3.1.0.1", ["3.1.0"])
-  }
+  args       = get-args("3.1.0.1")
 }
 
 target "3_1_1_0" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.1.1.0"]
+  cache-from = get-cache-from("3.1.1.0")
-  args = {
+  cache-to   = get-cache-to("3.1.1.0")
-    S6_OVERLAY_VERSION = "3.1.1.0"
+  tags       = get-tags("3.1.1.0", [])
-  }
+  args       = get-args("3.1.1.0")
 }
 
 target "3_1_1_1" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.1.1.1"]
+  cache-from = get-cache-from("3.1.1.1")
-  args = {
+  cache-to   = get-cache-to("3.1.1.1")
-    S6_OVERLAY_VERSION = "3.1.1.1"
+  tags       = get-tags("3.1.1.1", [])
-  }
+  args       = get-args("3.1.1.1")
 }
 
 target "3_1_1_2" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.1.1.2"]
+  cache-from = get-cache-from("3.1.1.2")
-  args = {
+  cache-to   = get-cache-to("3.1.1.2")
-    S6_OVERLAY_VERSION = "3.1.1.2"
+  tags       = get-tags("3.1.1.2", ["3.1", "3.1.1"])
-  }
+  args       = get-args("3.1.1.2")
 }
 
 target "3_1_2_0" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.1.2.0"]
+  cache-from = get-cache-from("3.1.2.0")
-  args = {
+  cache-to   = get-cache-to("3.1.2.0")
-    S6_OVERLAY_VERSION = "3.1.2.0"
+  tags       = get-tags("3.1.2.0", [])
-  }
+  args       = get-args("3.1.2.0")
 }
 
 target "3_1_2_1" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.1.2.1"]
+  cache-from = get-cache-from("3.1.2.1")
-  args = {
+  cache-to   = get-cache-to("3.1.2.1")
-    S6_OVERLAY_VERSION = "3.1.2.1"
+  tags       = get-tags("3.1.2.1", ["3.1.2"])
-  }
+  args       = get-args("3.1.2.1")
 }
 
 target "3_1_3_0" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.1.3.0"]
+  cache-from = get-cache-from("3.1.3.0")
-  args = {
+  cache-to   = get-cache-to("3.1.3.0")
-    S6_OVERLAY_VERSION = "3.1.3.0"
+  tags       = get-tags("3.1.3.0", ["3.1.3"])
-  }
+  args       = get-args("3.1.3.0")
 }
 
 target "3_1_4_0" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.1.4.0"]
+  cache-from = get-cache-from("3.1.4.0")
-  args = {
+  cache-to   = get-cache-to("3.1.4.0")
-    S6_OVERLAY_VERSION = "3.1.4.0"
+  tags       = get-tags("3.1.4.0", [])
-  }
+  args       = get-args("3.1.4.0")
 }
 
 target "3_1_4_1" {
   inherits   = ["build-dockerfile", "build-platforms", "build-common"]
-  tags     = ["docker.io/nlss/s6-rootfs:3.1.4.1", "docker.io/nlss/s6-rootfs:3.1", "docker.io/nlss/s6-rootfs:latest"]
+  cache-from = get-cache-from("3.1.4.1")
-  args = {
+  cache-to   = get-cache-to("3.1.4.1")
-    S6_OVERLAY_VERSION = "3.1.4.1"
+  tags       = get-tags("3.1.4.1", ["3.1", "3.1.4", "latest"])
-  }
+  args       = get-args("3.1.4.1")
 }