Add script to install helm for dynamic OS and ARCH (#521)

onyxia-api/Dockerfile

@@ -6,12 +6,16 @@ RUN java -Djarmode=layertools -jar application.jar  extract
 FROM eclipse-temurin:21.0.4_7-jre
 WORKDIR /app
 # Install helm
-RUN curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | DESIRED_VERSION=v3.15.3 bash
+COPY install-helm.sh install-helm.sh
+RUN ./install-helm.sh
+RUN rm install-helm.sh
+# Create onyxia group and user
 RUN groupadd --gid 101 --system onyxia && \
     useradd --system --uid 101 --create-home --home-dir /var/cache/onyxia --shell /sbin/nologin --gid onyxia --comment onyxia onyxia
 # Allow adding CA certificates
 ENV CACERTS_DIR="/usr/local/share/ca-certificates"
 RUN chown onyxia $JAVA_HOME/lib/security/cacerts
+# copy build extraction
 COPY --from=extract dependencies/ ./
 COPY --from=extract snapshot-dependencies/ ./
 COPY --from=extract spring-boot-loader/ ./

onyxia-api/install-helm.sh

@@ -0,0 +1,37 @@
+#! /bin/bash
+HELM_VERSION=v3.16.1
+
+# initOS discovers the operating system for this system.
+initOS() {
+  OS=$(echo `uname`|tr '[:upper:]' '[:lower:]')
+
+  case "$OS" in
+    # Minimalist GNU for Windows
+    mingw*|cygwin*) OS='windows';;
+  esac
+}
+
+# initArch discovers the architecture for this system.
+initArch() {
+  ARCH=$(uname -m)
+  case $ARCH in
+    armv5*) ARCH="armv5";;
+    armv6*) ARCH="armv6";;
+    armv7*) ARCH="arm";;
+    aarch64) ARCH="arm64";;
+    x86) ARCH="386";;
+    x86_64) ARCH="amd64";;
+    i686) ARCH="386";;
+    i386) ARCH="386";;
+  esac
+}
+
+initOS
+initArch
+HELM_DIST="helm-${HELM_VERSION}-${OS}-${ARCH}.tar.gz"
+wget https://get.helm.sh/${HELM_DIST}
+tar -zxvf ${HELM_DIST}
+mv ${OS}-${ARCH}/helm /usr/local/bin/helm
+rm ${HELM_DIST}
+rm -rf ${OS}-${ARCH}
+