fix: make canonical app build deterministic

Author: GCdePaula

.gitignore

@@ -1,4 +1,6 @@
 /target
+.env
+.env.fish
 sequencer.db
 sequencer.db-shm
 sequencer.db-wal

examples/canonical-app/Dockerfile

@@ -16,8 +16,13 @@ RUN echo "${TOOLS_SHA512}  /tmp/tools.deb" | sha512sum -c - \
 # alpine:3.22.2 (riscv64/alpine)
 FROM riscv64/alpine@sha256:372839ff152f938e12282226fb5f9ddaef72f9662dcadbf9dd0de5ce287c694e
 
+ARG ALPINE_MAIN_REPOSITORY=https://dl-cdn.alpinelinux.org/alpine/v3.22/main
+ARG LIBGCC_VERSION=14.2.0-r6
+
 # Add libgcc for Rust
-RUN apk add --no-cache libgcc
+RUN apk add --no-cache \
+    --repository="${ALPINE_MAIN_REPOSITORY}" \
+    "libgcc=${LIBGCC_VERSION}"
 
 # Copy `cartesi-init`
 COPY --from=extractor --chmod=755 /tmp/out/usr/sbin/cartesi-init /usr/sbin/cartesi-init

examples/canonical-app/justfile

@@ -1,6 +1,7 @@
 set shell := ["bash", "-euo", "pipefail", "-c"]
 
 out_dir := "out"
+source_date_epoch := "0"
 linux_kernel := out_dir + "/linux.bin"
 rootfs_tar := out_dir + "/canonical-rootfs.tar"
 rootfs_ext2 := out_dir + "/canonical-rootfs.ext2"
@@ -18,21 +19,21 @@ build-dapp: build-dapp-devnet
 
 build-dapp-devnet:
     mkdir -p {{out_dir}}
-    CROSS_CONFIG=Cross.toml DOCKER_DEFAULT_PLATFORM=linux/amd64 cross build --package canonical-app --bin canonical-app-devnet --target riscv64gc-unknown-linux-musl --release
+    SOURCE_DATE_EPOCH={{source_date_epoch}} CROSS_CONFIG=Cross.toml DOCKER_DEFAULT_PLATFORM=linux/amd64 cross build --package canonical-app --bin canonical-app-devnet --target riscv64gc-unknown-linux-musl --release
     cp ../../target/riscv64gc-unknown-linux-musl/release/canonical-app-devnet {{dapp_binary_devnet}}
     cp {{dapp_binary_devnet}} {{dapp_binary}}
 
 build-dapp-sepolia:
     mkdir -p {{out_dir}}
-    CROSS_CONFIG=Cross.toml DOCKER_DEFAULT_PLATFORM=linux/amd64 cross build --package canonical-app --bin canonical-app-sepolia --target riscv64gc-unknown-linux-musl --release
+    SOURCE_DATE_EPOCH={{source_date_epoch}} CROSS_CONFIG=Cross.toml DOCKER_DEFAULT_PLATFORM=linux/amd64 cross build --package canonical-app --bin canonical-app-sepolia --target riscv64gc-unknown-linux-musl --release
     cp ../../target/riscv64gc-unknown-linux-musl/release/canonical-app-sepolia {{dapp_binary_sepolia}}
     cp {{dapp_binary_sepolia}} {{dapp_binary}}
 
 build-rootfs: build-rootfs-devnet
 
 build-rootfs-devnet: build-dapp-devnet
     mkdir -p {{out_dir}}
-    docker buildx build \
+    SOURCE_DATE_EPOCH={{source_date_epoch}} docker buildx build \
       --platform linux/riscv64 \
       --output type=tar,dest={{rootfs_tar}} \
       --file Dockerfile \
@@ -41,7 +42,7 @@ build-rootfs-devnet: build-dapp-devnet
 
 build-rootfs-sepolia: build-dapp-sepolia
     mkdir -p {{out_dir}}
-    docker buildx build \
+    SOURCE_DATE_EPOCH={{source_date_epoch}} docker buildx build \
       --platform linux/riscv64 \
       --output type=tar,dest={{rootfs_tar}} \
       --file Dockerfile \