Add HCL Examples & Docs (#852)

Fixes https://github.com/pulumi/pulumi-docker-build/issues/844

examples/hcl/.dockerignore

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+command-output
+tmp

examples/hcl/Pulumi.yaml

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+name: provider-docker-build
+runtime: hcl
+config:
+  dockerHubPassword:
+    type: string
+    secret: true
+plugins:
+  providers:
+    - name: docker-build
+      path: ../../bin

examples/hcl/app/Dockerfile

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+FROM alpine
+RUN echo 👍

examples/hcl/app/Dockerfile.buildArgs

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+FROM alpine
+
+ARG SET_ME_TO_TRUE
+RUN [ "$SET_ME_TO_TRUE" = "true" ]
+RUN echo "That's the correct build arg, thanks! 👍"

examples/hcl/app/Dockerfile.emptyContext

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+FROM alpine
+RUN echo "This image doesn't use any local files, so it doesn't need a context parameter 👍"

examples/hcl/app/Dockerfile.extraHosts

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+FROM bash AS base
+
+RUN getent hosts metadata.google.internal

examples/hcl/app/Dockerfile.multiPlatform

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+FROM --platform=$BUILDPLATFORM alpine as build
+RUN echo ${BUILDPLATFORM} > buildplatform
+RUN echo ${TARGETPLATFORM} > targetplatform
+
+FROM build
+RUN cat buildplatform
+RUN cat targetplatform

examples/hcl/app/Dockerfile.namedContexts

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+# syntax=docker/dockerfile:1.4
+FROM golang:latest
+
+RUN version="$(go version)" && echo $version && [ "$version" = "go version go1.21.7 linux/amd64" ]
+RUN echo "This image uses named contexts to pin golang:latest to a specific SHA 👍"

examples/hcl/app/Dockerfile.secrets

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+FROM alpine
+
+RUN --mount=type=secret,id=password [ "$(cat /run/secrets/password)" = "hunter2" ]
+

examples/hcl/app/Dockerfile.sshMount

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+FROM alpine
+
+RUN apk add openssh-client
+
+RUN --mount=type=ssh ssh-add -l

examples/hcl/app/Dockerfile.target

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+FROM alpine as build-me
+RUN echo 👍
+
+FROM build-me as also-build-me
+RUN echo 🤙
+
+FROM build-me as dont-build-me
+RUN [ "true" = "false" ]

examples/hcl/program.hcl

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+pulumi {
+  required_providers {
+    docker-build = {
+      source  = "pulumi/docker-build"
+      version = "0.1.0-alpha.0+dev"
+    }
+  }
+}
+
+resource "docker-build_image" "multiPlatform" {
+  push = false
+  dockerfile = {
+    location = "./app/Dockerfile.multiPlatform"
+  }
+  context = {
+    location = "./app"
+  }
+  platforms = ["plan9/amd64", "plan9/386"]
+}
+resource "docker-build_image" "registryPush" {
+  push = false
+  context = {
+    location = "./app"
+  }
+  tags = ["docker.io/pulumibot/buildkit-e2e:example"]
+  exports {
+    registry = {
+      oci_media_types = true
+      push            = false
+    }
+  }
+  registries {
+    address  = "docker.io"
+    username = "pulumibot"
+    password = var.dockerHubPassword
+  }
+}
+resource "docker-build_image" "cached" {
+  push = false
+  context = {
+    location = "./app"
+  }
+  cache_to {
+    local = {
+      dest = "tmp/cache"
+      mode = "max"
+    }
+  }
+  cache_from {
+    local = {
+      src = "tmp/cache"
+    }
+  }
+}
+resource "docker-build_image" "buildArgs" {
+  push = false
+  dockerfile = {
+    location = "./app/Dockerfile.buildArgs"
+  }
+  context = {
+    location = "./app"
+  }
+  build_args = {
+    "SET_ME_TO_TRUE" = "true"
+  }
+}
+resource "docker-build_image" "extraHosts" {
+  push = false
+  dockerfile = {
+    location = "./app/Dockerfile.extraHosts"
+  }
+  context = {
+    location = "./app"
+  }
+  add_hosts = ["metadata.google.internal:169.254.169.254"]
+}
+resource "docker-build_image" "sshMount" {
+  push = false
+  dockerfile = {
+    location = "./app/Dockerfile.sshMount"
+  }
+  context = {
+    location = "./app"
+  }
+  ssh {
+    id = "default"
+  }
+}
+resource "docker-build_image" "secrets" {
+  push = false
+  dockerfile = {
+    location = "./app/Dockerfile.secrets"
+  }
+  context = {
+    location = "./app"
+  }
+  secrets = {
+    "password" = "hunter2"
+  }
+}
+resource "docker-build_image" "labels" {
+  push = false
+  context = {
+    location = "./app"
+  }
+  labels = {
+    "description" = "This image will get a descriptive label 👍"
+  }
+}
+resource "docker-build_image" "target" {
+  push = false
+  dockerfile = {
+    location = "./app/Dockerfile.target"
+  }
+  context = {
+    location = "./app"
+  }
+  target = "build-me"
+}
+resource "docker-build_image" "namedContexts" {
+  push = false
+  dockerfile = {
+    location = "./app/Dockerfile.namedContexts"
+  }
+  context = {
+    location = "./app"
+    named = {
+      "golang:latest" = {
+        location = "docker-image://golang@sha256:b8e62cf593cdaff36efd90aa3a37de268e6781a2e68c6610940c48f7cdf36984"
+      }
+    }
+  }
+}
+resource "docker-build_image" "remoteContext" {
+  push = false
+  context = {
+    location = "https://raw.githubusercontent.com/pulumi/pulumi-docker/api-types/provider/testdata/Dockerfile"
+  }
+}
+resource "docker-build_image" "remoteContextWithInline" {
+  push = false
+  dockerfile = {
+    inline = "FROM busybox\nCOPY hello.c ./\n"
+  }
+  context = {
+    location = "https://github.com/docker-library/hello-world.git"
+  }
+}
+resource "docker-build_image" "inline" {
+  push = false
+  dockerfile = {
+    inline = "FROM alpine\nRUN echo \"This uses an inline Dockerfile! 👍\"\n"
+  }
+}
+resource "docker-build_image" "dockerLoad" {
+  push = false
+  context = {
+    location = "./app"
+  }
+  exports {
+    docker = {
+      tar = true
+    }
+  }
+}
+variable "dockerHubPassword" {
+  type = string
+}
+output "platforms" {
+  value = docker-build_image.multiPlatform.platforms
+}