ci: build amd64 and arm64 images for the sidecar and the plugin (#26)

Adds support for building and publishing Docker images for both amd64 and arm64 architectures.
Ensures compatibility across multiple platforms by using cross-compilation.
Updates relevant configuration files for CI/CD to handle the new build process.
Fixes issues related to Python version conflicts and ensures the correct directory structure in the final image.

Signed-off-by: Francesco Canovai <francesco.canovai@enterprisedb.com>
Signed-off-by: Leonardo Cecchi <leonardo.cecchi@enterprisedb.com>
Signed-off-by: Jonathan Gonzalez V. <jonathan.abdiel@gmail.com>
Signed-off-by: Niccolò Fei <niccolo.fei@enterprisedb.com>
Co-authored-by: Leonardo Cecchi <leonardo.cecchi@enterprisedb.com>
Co-authored-by: Jonathan Gonzalez V. <jonathan.abdiel@gmail.com>
Co-authored-by: Niccolò Fei <niccolo.fei@enterprisedb.com>

Taskfile.yml

@@ -66,15 +66,31 @@ tasks:
     sources:
       - ./**/*.go
 
-  build-image:
+  build-plugin-image:
-    desc: Build a container image for the plugin
+    desc: Build the operator container image for the plugin
     env:
       # renovate: datasource=git-refs depName=docker lookupName=https://github.com/purpleclay/daggerverse currentValue=main
       DAGGER_DOCKER_SHA: d7438770bfab8844a89c2923b9e2942e78de5239
     cmds:
       - >
         GITHUB_REF= dagger -s call -m github.com/purpleclay/daggerverse/docker@${DAGGER_DOCKER_SHA}
-        build --dir . --platform linux/amd64 image > /dev/null
+        build --dir . --file containers/Dockerfile.plugin --platform linux/amd64 image > /dev/null
+
+  build-sidecar-image:
+    desc: Build the sidecar container image for the plugin
+    env:
+      # renovate: datasource=git-refs depName=docker lookupName=https://github.com/purpleclay/daggerverse currentValue=main
+      DAGGER_DOCKER_SHA: d7438770bfab8844a89c2923b9e2942e78de5239
+    cmds:
+      - >
+        GITHUB_REF= dagger -s call -m github.com/purpleclay/daggerverse/docker@${DAGGER_DOCKER_SHA}
+        build --dir . --file containers/Dockerfile.sidecar --platform linux/amd64 image > /dev/null
+
+  build-images:
+    desc: Build the container images for the plugin
+    deps:
+      - build-plugin-image
+      - build-sidecar-image
 
   ci:
     desc: Run the CI pipeline
@@ -84,7 +100,7 @@ tasks:
       - uncommitted
       - lint
       - go-test
-      - build-image
+      - build-images
 
   publish:
     desc: Build and publish a container image for the plugin
@@ -99,7 +115,8 @@ tasks:
         - REGISTRY_USER
         - REGISTRY_PASSWORD
     vars:
-      IMAGE_NAME: ghcr.io/{{.GITHUB_REPOSITORY}}{{if not (hasPrefix "refs/tags/v" .GITHUB_REF)}}-testing{{end}}
+      PLUGIN_IMAGE_NAME: ghcr.io/{{.GITHUB_REPOSITORY}}{{if not (hasPrefix "refs/tags/v" .GITHUB_REF)}}-testing{{end}}
+      SIDECAR_IMAGE_NAME: ghcr.io/{{.GITHUB_REPOSITORY}}-sidecar{{if not (hasPrefix "refs/tags/v" .GITHUB_REF)}}-testing{{end}}
       # remove /merge suffix from the branch name. This is a workaround for the GitHub workflow on PRs,
       # where the branch name is suffixed with /merge. Prepend pr- to the branch name on PRs.
       IMAGE_VERSION: '{{regexReplaceAll "(\\d+)/merge" .GITHUB_REF_NAME "pr-${1}"}}'
@@ -110,8 +127,13 @@ tasks:
       - >
         dagger -s call -m github.com/purpleclay/daggerverse/docker@${DAGGER_DOCKER_SHA}
         --registry ghcr.io --username $REGISTRY_USER --password env:REGISTRY_PASSWORD
-        build --dir . --platform linux/amd64
+        build --dir . --file containers/Dockerfile.plugin --platform linux/amd64 --platform linux/arm64
-        publish --ref {{.IMAGE_NAME}} --tags {{.IMAGE_VERSION}}
+        publish --ref {{.PLUGIN_IMAGE_NAME}} --tags {{.IMAGE_VERSION}}
+      - >
+        dagger -s call -m github.com/purpleclay/daggerverse/docker@${DAGGER_DOCKER_SHA}
+        --registry ghcr.io --username $REGISTRY_USER --password env:REGISTRY_PASSWORD
+        build --dir . --file containers/Dockerfile.sidecar --platform linux/amd64 --platform linux/arm64
+        publish --ref {{.SIDECAR_IMAGE_NAME}} --tags {{.IMAGE_VERSION}}
 
   manifest:
     desc: Update the image in the Kustomization

containers/Dockerfile.plugin

@@ -5,27 +5,42 @@ ARG TARGETARCH
 
 WORKDIR /workspace
 # Copy the Go Modules manifests
-COPY go.mod go.mod
+COPY ../go.mod go.mod
-COPY go.sum go.sum
+COPY ../go.sum go.sum
 # cache deps before building and copying source so that we don't need to re-download as much
 # and so that source changes don't invalidate our downloaded layer
 RUN go mod download
 
 # Copy the go source
-COPY cmd/instance/main.go cmd/instance/main.go
+COPY ../cmd/operator/main.go cmd/operator/main.go
-COPY api/ api/
+COPY ../api api/
-COPY internal/ internal/
+COPY ../internal internal/
 
 # Build
 # the GOARCH has not a default value to allow the binary be built according to the host where the command
 # was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
 # the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
 # by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
-RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/instance/main.go
+RUN --mount=type=cache,target=/go/pkg/mod --mount=type=cache,target=/root/.cache/go-build \
+    CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/operator/main.go
 
 # Use distroless as minimal base image to package the manager binary
 # Refer to https://github.com/GoogleContainerTools/distroless for more details
 FROM gcr.io/distroless/static:nonroot
+
+ENV SUMMARY="CloudNativePG Barman plugin" \
+    DESCRIPTION="Container image that provides the barman-cloud plugin"
+
+LABEL summary="$SUMMARY" \
+      description="$DESCRIPTION" \
+      io.k8s.display-name="$SUMMARY" \
+      io.k8s.description="$DESCRIPTION" \
+      name="CloudNativePG Barman plugin" \
+      vendor="CloudNativePG Contributors" \
+      url="https://cloudnative-pg.io/" \
+      version="" \
+      release="1"
+
 WORKDIR /
 COPY --from=builder /workspace/manager .
 USER 65532:65532

containers/Dockerfile.sidecar

@@ -0,0 +1,54 @@
+# Sidecar
+# The container needs to provide and build two components:
+# * barman-cloud
+# * instance plugin
+# Both components are built before going into a distroless container
+
+# Build barman-cloud
+# pip will build everything inside /usr/ since this is the case
+# we should build and then copy every file into a destination that will
+# then copy into the distroless container
+FROM python:3.12-slim AS pythonbuilder
+RUN apt-get update && \
+    apt-get install -y postgresql-common build-essential && \
+    /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh -y && \
+    apt-get install -y libpq-dev && \
+    pip install barman[azure,cloud,google,snappy]==3.11.1 setuptools
+# Prepare a new /usr/ directory with the files we'll need in the final image
+RUN mkdir /new-usr/ && \
+    cp -r --parents /usr/local/lib/ /usr/lib/*-linux-gnu/ /usr/local/bin/ \
+    /new-usr/
+
+# Build instance
+# This step builds a simple instance app that will manage and handle
+# the barman-cloud commands inside the sidecar
+FROM --platform=$BUILDPLATFORM golang:1.23.1 AS gobuilder
+ENV CGO_ENABLED=0
+COPY .. /src
+ARG TARGETOS
+ARG TARGETARCH
+RUN --mount=type=cache,target=/go/pkg/mod --mount=type=cache,target=/root/.cache/go-build \
+    GOOS=$TARGETOS GOARCH=$TARGETARCH go build -C /src -o /build/instance /src/cmd/instance/main.go
+
+# Joint process
+# Now we put everything that was build from the origin into our
+# distroless container
+FROM gcr.io/distroless/python3-debian12:nonroot
+
+ENV SUMMARY="CloudNativePG Barman plugin" \
+    DESCRIPTION="Container image that provides the barman-cloud sidecar"
+
+LABEL summary="$SUMMARY" \
+      description="$DESCRIPTION" \
+      io.k8s.display-name="$SUMMARY" \
+      io.k8s.description="$DESCRIPTION" \
+      name="CloudNativePG Barman plugin sidecar" \
+      vendor="CloudNativePG Contributors" \
+      url="https://cloudnative-pg.io/" \
+      version="" \
+      release="1"
+
+COPY --from=pythonbuilder /new-usr/* /usr/
+COPY --from=gobuilder /build/instance /usr/local/bin/instance
+USER 26:26
+ENTRYPOINT ["/usr/local/bin/instance"]

internal/cnpgi/operator/lifecycle.go

@@ -85,6 +85,9 @@ func (impl LifecycleImplementation) LifecycleHook(
 				Value: "/controller/wal-restore-spool",
 			},
 		},
+		Command: []string{
+			"/usr/local/bin/instance",
+		},
 	}, true)
 	if err != nil {
 		return nil, err