Move Gradle handing to separate script

sync/.dockerignore

@@ -1,4 +1,5 @@
 **
+!download-gradle.sh
 !resolve-deps.sh
 !src
 !requirements.txt

sync/Dockerfile

@@ -1,53 +1,28 @@
 FROM rockylinux:9
 
 # Base image
-
-ENV GRADLE_VER=8.11
-ENV GRADLE_HOME=/opt/gradle
-
 # Local change to disable mirrorlists
 RUN find /etc/yum.repos.d/ -type f -exec sed -i 's/^mirrorlist/#mirrorlist/;s/^#baseurl/baseurl/' {} \;
 
 RUN dnf makecache --refresh && \
     dnf -y update
 
-RUN dnf -y install wget unzip && \
-    dnf -y clean all && rm -rf /var/cache
-
-RUN wget --output-document=/gradle.zip "https://services.gradle.org/distributions/gradle-${GRADLE_VER}-bin.zip" && \
-    unzip -d /tmp /gradle.zip && \
-    mv /tmp/gradle-${GRADLE_VER} /opt/gradle && \
-    ln -s ${GRADLE_HOME}/bin/gradle /usr/local/bin/gradle && \
-    rm -rf /gradle.zip
-
 ENV JRE_VER=17
 
 RUN dnf -y install vim yum-utils createrepo_c bzip2 tar vim cargo nodejs \
     jq java-${JRE_VER}-openjdk java-${JRE_VER}-openjdk-devel.x86_64 nmap-ncat \
-    python3.12-pip python3.12-lxml python3.12-requests && \
+    python3.12-pip python3.12-lxml python3.12-requests wget unzip && \
     dnf -y update && \
     ln -sf /usr/bin/python3.12 /usr/bin/python3 && \
     dnf -y clean all && rm -rf /var/cache
 
 # Local image
-
-WORKDIR /tmp/gradle-wrapper-setup/default
-RUN touch settings.gradle.kts
-RUN gradle wrapper
-RUN ./gradlew build
-
-WORKDIR /tmp/gradle-wrapper-setup/v8.8
-RUN touch settings.gradle.kts
-RUN gradle wrapper --gradle-version 8.8
-RUN ./gradlew build
-
-WORKDIR /tmp/gradle-wrapper-setup/v8.10
-RUN touch settings.gradle.kts
-RUN gradle wrapper --gradle-version 8.10
-RUN ./gradlew build
-
 WORKDIR /workdir
 
+ENV GRADLE_HOME=/opt/gradle
+COPY download-gradle.sh .
+RUN sh ./download-gradle.sh 8.12 8.11 8.10 8.8
+
 COPY requirements.txt .
 RUN python3 -m pip install -r requirements.txt
 

sync/download-gradle.sh

@@ -0,0 +1,42 @@
+#!/bin/sh
+
+USAGE="Usage: $0 MAIN_GRADLE_VERSION OTHER_GRADLE_VERSIONS..."
+
+if ["$#" == "0" ]; then
+    echo $USAGE
+    exit 1
+fi
+
+MAIN_VERSION=$1
+shift
+
+# Download the main version manually
+GRADLE_URL="https://services.gradle.org/distributions/gradle-${MAIN_VERSION}-bin.zip"
+DOWNLOAD_PATH=/tmp/gradle.zip
+
+echo "Downloading gradle $MAIN_VERSION"
+wget --output-document=$DOWNLOAD_PATH $GRADLE_URL
+unzip -d /tmp $DOWNLOAD_PATH
+mv /tmp/gradle-${MAIN_VERSION} $GRADLE_HOME
+ln -s ${GRADLE_HOME}/bin/gradle /usr/local/bin/gradle
+rm -rf $DOWNLOAD_PATH
+
+# Use the main version to download the others
+# This is done by creating a fake project for each version,
+# and setting up the gradle wrapper. This causes gradle to
+# download the required Gradle version to GRADLE_HOME or GRADLE_USER_HOME,
+# where it can be reused later.
+MAIN_PROJECT_DIR="/tmp/gradle-wrapper-setup"
+while (( "$#" )); do
+    OTHER_VERSION=$1
+    shift
+
+    echo "Downloading gradle $OTHER_VERSION"
+    PROJECT_DIR="$MAIN_PROJECT_DIR/gradle-$OTHER_VERSION"
+    mkdir -p "$PROJECT_DIR"
+    cd "$PROJECT_DIR"
+    touch "./settings.gradle.kts"
+    gradle wrapper --gradle-version "$OTHER_VERSION"
+    ./gradlew build
+    cd -
+done

sync/resolve-deps.sh

@@ -35,12 +35,6 @@ fi
 export PROJECTS_DIR=/gradle-projects
 mkdir -p "${PROJECTS_DIR}"
 
-export GRADLE_DOWNLOAD_DIR=/gradle-download
-mkdir -p "${GRADLE_DOWNLOAD_DIR}"
-
-export GRADLE_VERSIONS_DIR=/gradle-versions
-mkdir -p "${GRADLE_VERSIONS_DIR}"
-
 echo "Resolving packages and generating gradle config"
 $CUSTOMPYTHON --version
 if ! $CUSTOMPYTHON src/main.py -vv --repo="http://repo:80/releases" --output-dir "$PROJECTS_DIR" /package-list.yaml; then