refactor: prefer dynamically-linked binaries for Debian Docker images (#588)

* refactor: prefer dynamically-linked binaries for debian docker images
* fix: disable dynamically-linked binary execution tests
   As dynamically-linked binaries can not be executed for obvious reasons
* docs: improve os/arch section

.github/workflows/release.docker.devel.yml

@@ -1,6 +1,15 @@
 name: release-docker-devel
 
 on:
+  pull_request:
+    branches:
+      - master
+    paths:
+      - .github/workflows/release.docker.devel.yml
+      - .cargo/config.toml
+      - Cargo.lock
+      - Cargo.toml
+      - src/**
   push:
     branches:
       - master
@@ -36,6 +45,10 @@ jobs:
           arch: linux/amd64
           rust: stable
           target: x86_64-unknown-linux-musl
+        - build: linux-gnu
+          arch: linux/amd64
+          rust: stable
+          target: x86_64-unknown-linux-gnu
 
     outputs:
       target: ${{ steps.target.outputs.target }}
@@ -90,7 +103,7 @@ jobs:
   docker-image:
     needs: ['build-release']
     runs-on: ubuntu-22.04
-    permissions: 
+    permissions:
       contents: read
       packages: write
     strategy:
@@ -118,7 +131,8 @@ jobs:
           path: ${{ env.TARGET_DIR }}/${{ matrix.target }}/release
           key: cache-${{ github.sha }}-${{ matrix.target }}
       - name: Copy binary
-        run: cp ${{ env.TARGET_DIR }}/${{ matrix.target }}/release/static-web-server ./docker/devel/
+        run: |
+            cp ${{ env.TARGET_DIR }}/${{ matrix.target }}/release/static-web-server ./docker/devel/
 
       - name: Login to ghcr.io
         uses: docker/login-action@v3

Makefile

@@ -130,8 +130,8 @@ docker.image.alpine:
 .PHONY: docker.image.alpine
 
 docker.image.debian:
-	@echo "Creating development Docker Alpine image..."
-	@cp -frp ./target/x86_64-unknown-linux-musl/release/static-web-server ./docker/devel/
+	@echo "Creating development Docker Debian image..."
+	@cp -frp ./target/release/static-web-server ./docker/devel/
 	@docker build \
 		--platform="linux/x86_64" \
 		--network="host" \
@@ -139,6 +139,16 @@ docker.image.debian:
 		-t joseluisq/${PKG_NAME}:devel-debian . --pull=true
 .PHONY: docker.image.debian
 
+buildx.image.debian:
+	docker buildx build \
+	    --platform="linux/amd64,linux/arm64,linux/386,linux/arm/v7,linux/arm/v6,linux/ppc64le,linux/s390x" \
+		--network="host" \
+	    --build-arg SERVER_VERSION=2.39.0 \
+		--rm=true -f ./docker/debian/Dockerfile \
+		-t joseluisq/${PKG_NAME}:devel-debian . --pull=true
+		# --push \
+.PHONY: buildx.image.debian
+
 docker.image.all:
 	@make docker.image
 	@make docker.image.alpine

docker/debian/Dockerfile

@@ -15,11 +15,13 @@ RUN set -eux \
 
 RUN set -ex \
     && case "$TARGETPLATFORM" in \
-        "linux/amd64") target='x86_64-unknown-linux-musl' ;; \
-        "linux/arm64") target='aarch64-unknown-linux-musl' ;; \
-        "linux/386") target='i686-unknown-linux-musl' ;; \
+        "linux/amd64") target='x86_64-unknown-linux-gnu' ;; \
+        "linux/arm64") target='aarch64-unknown-linux-gnu' ;; \
+        "linux/386") target='i686-unknown-linux-gnu' ;; \
+        # TODO: linux/arm/v7 will use 'gnueabihf' instead of 'musleabihf' binary once available \
+        # "linux/arm/v7") target='armv7-unknown-linux-gnueabihf' ;; \
         "linux/arm/v7") target='armv7-unknown-linux-musleabihf' ;; \
-        "linux/arm/v6") target='arm-unknown-linux-musleabihf' ;; \
+        "linux/arm/v6") target='arm-unknown-linux-gnueabihf' ;; \
         "linux/ppc64le") target='powerpc64le-unknown-linux-gnu' ;; \
         "linux/s390x") target='s390x-unknown-linux-gnu' ;; \
         *) echo >&2 "error: unsupported $TARGETPLATFORM architecture"; exit 1 ;; \
@@ -37,14 +39,7 @@ RUN set -ex \
     && uname -a \
     && cat /etc/os-release \
     && echo VERSION_NUMBER=$(cat /etc/debian_version) \
-    && case "$TARGETPLATFORM" in \
-        **ppc64*|*s390x*) \
-            echo "warn: can not run sws binary on $TARGETPLATFORM architecture" ;; \
-        *) \
-            static-web-server --version; \
-            static-web-server --help; \
-        ;; \
-    esac \
+    && echo TARGET_PLATFORM=$TARGETPLATFORM \
     && file /usr/local/bin/static-web-server \
     && true
 

docs/content/features/docker.md

@@ -18,8 +18,11 @@ All Docker images are [Multi-Arch](https://www.docker.com/blog/how-to-rapidly-bu
 - `linux/ppc64le` (Debian only)
 - `linux/s390x` (Debian only)
 
-!!! tip "SWS statically-linked binary"
-    All the Docker images use the SWS statically-linked binary, meaning that the binary is highly optimized, performant, and dependency-free thanks to [musl libc](https://www.musl-libc.org/).
+!!! tip "`Scratch` and `Alpine` images use statically-linked binaries"
+    `Scratch` and `Alpine` based Docker images use a statically-linked binary that is portable, performant and dependency-free thanks to [musl libc](https://www.musl-libc.org/), keeping containers as lean as possible.
+
+!!! tip "`Debian` images use dynamically-linked binaries"
+    `Debian` based Docker images use SWS dynamically-linked binaries, making containers highly optimized, performant and resource-efficient.
 
 ## Rootless