Add PHP dockerfile building (#541)

Co-authored-by: Josh Berry <josh.berry@temporal.io>

.github/workflows/all-docker-images.yaml

@@ -13,6 +13,9 @@ on:
       py-ver:
         description: Python SDK ver to build. Skipped if not specified. Must start with v.
         type: string
+      php-ver:
+        description: PHP SDK ver to build. Skipped if not specified.
+        type: string
       ts-ver:
         description: TypeScript SDK ver to build. Skipped if not specified. Must start with v.
         type: string
@@ -43,6 +46,9 @@ on:
       py-ver:
         description: Python SDK ver to build. Skipped if not specified. Must start with v.
         type: string
+      php-ver:
+        description: PHP SDK ver to build. Skipped if not specified.
+        type: string
       ts-ver:
         description: TypeScript SDK ver to build. Skipped if not specified. Must start with v.
         type: string
@@ -107,6 +113,17 @@ jobs:
       do-push: ${{ inputs.do-push }}
       skip-cloud: ${{ inputs.skip-cloud }}
 
+  build-php-docker-images:
+    if: inputs.php-ver
+    uses: ./.github/workflows/docker-images.yaml
+    secrets: inherit
+    with:
+      lang: php
+      sdk-version: ${{ inputs.php-ver }}
+      semver-latest: major
+      do-push: ${{ inputs.do-push }}
+      skip-cloud: ${{ inputs.skip-cloud }}
+
   build-dotnet-docker-images:
     if: inputs.cs-ver
     uses: ./.github/workflows/docker-images.yaml

dockerfiles/php.Dockerfile

@@ -0,0 +1,55 @@
+# Build in a full featured container
+FROM php:8.2 as build
+
+# Install protobuf compiler
+RUN apt-get update \
+ && DEBIAN_FRONTEND=noninteractive \
+    apt-get install --no-install-recommends --assume-yes \
+      protobuf-compiler=3.* libprotobuf-dev=3.* wget=*
+
+# Get go compiler
+ARG PLATFORM=amd64
+RUN wget -q https://go.dev/dl/go1.22.4.linux-${PLATFORM}.tar.gz \
+    && tar -C /usr/local -xzf go1.22.4.linux-${PLATFORM}.tar.gz
+# Install Rust for compiling the core bridge - only required for installation from a repo but is cheap enough to install
+# in the "build" container (-y is for non-interactive install)
+# hadolint ignore=DL4006
+RUN wget -q -O - https://sh.rustup.rs | sh -s -- -y
+
+# Install composer
+COPY --from=composer:2.3 /usr/bin/composer /usr/bin/composer
+
+WORKDIR /app
+
+# Copy CLI build dependencies
+COPY features ./features
+COPY harness ./harness
+COPY sdkbuild ./sdkbuild
+COPY cmd ./cmd
+COPY go.mod go.sum main.go ./
+
+# Build the CLI
+RUN CGO_ENABLED=0 /usr/local/go/bin/go build -o temporal-features
+
+ARG SDK_VERSION
+ARG SDK_REPO_URL
+ARG SDK_REPO_REF
+# Could be a cloned lang SDK git repo or just an arbitrary file so the COPY command below doesn't fail.
+# It was either this or turn the Dockerfile into a template, this seemed simpler although a bit awkward.
+ARG REPO_DIR_OR_PLACEHOLDER
+COPY ./${REPO_DIR_OR_PLACEHOLDER} ./${REPO_DIR_OR_PLACEHOLDER}
+
+# Prepare the feature for running. We need to use in-project venv so it is copied into smaller img.
+RUN CGO_ENABLED=0 ./temporal-features prepare --lang php --dir prepared --version "$SDK_VERSION"
+
+# Copy the CLI and prepared feature to a smaller container for running
+FROM spiralscout/php-grpc:8.2
+
+COPY --from=build /app/temporal-features /app/temporal-features
+COPY --from=build /app/features /app/features
+COPY --from=build /app/prepared /app/prepared
+COPY --from=build /app/harness/php /app/harness/php
+COPY --from=build /app/${REPO_DIR_OR_PLACEHOLDER} /app/${REPO_DIR_OR_PLACEHOLDER}
+
+# Use entrypoint instead of command to "bake" the default command options
+ENTRYPOINT ["/app/temporal-features", "run", "--lang", "php", "--prepared-dir", "prepared"]