Support arm64 builds

Author: madnificent

Dockerfile

@@ -3,7 +3,13 @@ FROM node:20-bookworm
 LABEL maintainer="[email protected]"
 
 RUN apt-get update && apt-get -y upgrade && apt-get -y install git openssh-client rsync jq
-RUN cd /tmp/ && wget https://github.com/watchexec/watchexec/releases/download/v2.3.2/watchexec-2.3.2-x86_64-unknown-linux-gnu.deb && dpkg -i watchexec-2.3.2-x86_64-unknown-linux-gnu.deb
+RUN if [[ "$TARGETPLATFORM" -eq "linux/amd64" ]]; then \
+    cd /tmp/ && wget https://github.com/watchexec/watchexec/releases/download/v2.3.2/watchexec-2.3.2-x86_64-unknown-linux-gnu.deb && dpkg -i watchexec-2.3.2-x86_64-unknown-linux-gnu.deb; \
+    elif [[ "$TARGETPLATFORM" -eq "linux/arm64" ]]; then \
+    cd /tmp/ && wget https://github.com/watchexec/watchexec/releases/download/v2.3.2/watchexec-2.3.2-aarch64-unknown-linux-gnu.deb && dpkg -i watchexec-2.3.2-aarch64-unknown-linux-gnu.deb; \
+    else \
+    echo "$TARGETPLATFORM not supported, check watchexec" ; \
+    fi
 
 ENV MU_SPARQL_ENDPOINT='http://database:8890/sparql'
 ENV MU_APPLICATION_GRAPH='http://mu.semte.ch/application'