Combine the ARM + AMD Dockerfiles

[clux]

Current diff is tiny:

--- Dockerfile.x86_64	2024-02-27 19:26:58.125640186 +0000
+++ Dockerfile.arm64	2024-02-27 19:26:58.125640186 +0000
@@ -1,3 +1,4 @@
+# syntax=docker/dockerfile:1
 FROM ubuntu:jammy
 LABEL maintainer="Eirik Albrigtsen <sszynrae@gmail.com>"
 
@@ -38,14 +39,14 @@
 # Install rust using rustup
 ARG CHANNEL
 ENV RUSTUP_VER="1.26.0" \
-    RUST_ARCH="x86_64-unknown-linux-gnu" \
+    RUST_ARCH="aarch64-unknown-linux-gnu" \
     CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse
 
 RUN curl "https://static.rust-lang.org/rustup/archive/${RUSTUP_VER}/${RUST_ARCH}/rustup-init" -o rustup-init && \
     chmod +x rustup-init && \
     ./rustup-init -y --default-toolchain ${CHANNEL} --profile minimal --no-modify-path && \
     rm rustup-init && \
-    ~/.cargo/bin/rustup target add x86_64-unknown-linux-musl
+    ~/.cargo/bin/rustup target add aarch64-unknown-linux-musl
 
 # Allow non-root access to cargo
 RUN chmod a+X /root
@@ -66,7 +67,7 @@
 
 # Install a more recent release of protoc (protobuf-compiler in jammy is 4 years old and misses some features)
 RUN cd /tmp && \
-    curl -sSL https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOBUF_VER}/protoc-${PROTOBUF_VER}-linux-x86_64.zip -o protoc.zip && \
+    curl -sSL https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOBUF_VER}/protoc-${PROTOBUF_VER}-linux-aarch_64.zip -o protoc.zip && \
     unzip protoc.zip && \
     cp bin/protoc /usr/bin/protoc && \
     rm -rf *
@@ -75,10 +76,10 @@
 # Primarily for the benefit of postgres.
 # Lastly, link some linux-headers for openssl 1.1 (not used herein)
 RUN mkdir $PREFIX && \
-    echo "$PREFIX/lib" >> /etc/ld-musl-x86_64.path && \
-    ln -s /usr/include/x86_64-linux-gnu/asm /usr/include/x86_64-linux-musl/asm && \
-    ln -s /usr/include/asm-generic /usr/include/x86_64-linux-musl/asm-generic && \
-    ln -s /usr/include/linux /usr/include/x86_64-linux-musl/linux
+    echo "$PREFIX/lib" >> /etc/ld-musl-aarch64.path && \
+    ln -s /usr/include/aarch64-linux-gnu/asm /usr/include/aarch64-linux-musl/asm && \
+    ln -s /usr/include/asm-generic /usr/include/aarch64-linux-musl/asm-generic && \
+    ln -s /usr/include/linux /usr/include/aarch64-linux-musl/linux
 
 # Build zlib (used in openssl and pq)
 RUN curl -sSL https://zlib.net/zlib-$ZLIB_VER.tar.gz | tar xz && \
@@ -92,7 +93,7 @@
 # TODO: fix so that it works
 RUN curl -sSL https://www.openssl.org/source/openssl-$SSL_VER.tar.gz | tar xz && \
     cd openssl-$SSL_VER && \
-    ./Configure no-zlib no-shared -fPIC --prefix=$PREFIX --openssldir=$PREFIX/ssl linux-x86_64 && \
+    CFLAGS="-mno-outline-atomics" ./Configure no-zlib no-shared -fPIC --prefix=$PREFIX --openssldir=$PREFIX/ssl linux-aarch64 && \
     env C_INCLUDE_PATH=$PREFIX/include make depend 2> /dev/null && \
     make -j$(nproc) && make all install_sw && \
     cd .. && rm -rf openssl-$SSL_VER
@@ -138,12 +139,13 @@
 # See https://github.com/sgrif/pq-sys/pull/18
 ENV PATH=/root/.cargo/bin:$PREFIX/bin:$PATH \
     RUSTUP_HOME=/root/.rustup \
-    CARGO_BUILD_TARGET=x86_64-unknown-linux-musl \
+    CARGO_BUILD_TARGET=aarch64-unknown-linux-musl \
+    CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_RUSTFLAGS="-Clink-self-contained=yes -Clinker=rust-lld -Ctarget-feature=+crt-static" \
     PKG_CONFIG_ALLOW_CROSS=true \
     PKG_CONFIG_ALL_STATIC=true \
-    PQ_LIB_STATIC_X86_64_UNKNOWN_LINUX_MUSL=true \
+    PQ_LIB_STATIC_AARCH64_UNKNOWN_LINUX_MUSL=true \
     PKG_CONFIG_PATH=$PREFIX/lib/pkgconfig \
-    PG_CONFIG_X86_64_UNKNOWN_LINUX_GNU=/usr/bin/pg_config \
+    PG_CONFIG_AARCH64_UNKNOWN_LINUX_GNU=/usr/bin/pg_config \
     OPENSSL_STATIC=true \
     OPENSSL_DIR=$PREFIX \
     SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt \

strategy (i expect) will be:

• evars and values re-using values; pass in ARG arch as x86_64 or aarch64 and similar
• symlink area, same as above ^
• CARGO_TARGET_XXX_ + PQ_LIB_STATIC_XXX evars variants at the end -> just add all of them? Noops to have in wrong arch.
• CFLAGS for openssl. uhhh, not sure. huge inline arg str? 😬 templating? big if arch == X statement gating the RUN statement somehow?