Cache gradle binaries between runs

docker-compose.yml

@@ -20,3 +20,4 @@ services:
       - repo
     volumes:
       - ./package-list.yaml:/package-list.yaml
+      - ./data/gradle:/gradle-download

sync/resolve-deps.sh

@@ -35,6 +35,9 @@ 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}"
 
@@ -50,19 +53,23 @@ if [ $? -lt 30 ]; then
     version=$(basename "${path}")
     gradle_path=${GRADLE_VERSIONS_DIR}/gradle-${version}
 
-    if [[ "${version}" == "${GRADLE_VERSION}" ]] || [[ "${version}" == "default" ]]; then
+    if [[ "${version}" == "default" ]]; then
       gradle_path=${GRADLE_HOME}
     elif [[ ! -d "${gradle_path}" ]]; then
-      echo "Downloading gradle ${version}"
       filename="gradle-${version}-bin.zip"
-      wget "https://services.gradle.org/distributions/${filename}"
-      unzip -q "${filename}" -d "${GRADLE_VERSIONS_DIR}"
-      rm "${filename}"
+      zippath="${GRADLE_DOWNLOAD_DIR}/${filename}"
+
+      if [[ ! -f "${zippath}" ]]; then
+        echo "Downloading gradle ${version}"
+        wget "https://services.gradle.org/distributions/${filename}" -O "${GRADLE_DOWNLOAD_DIR}/${filename}"
 
-      if [[ ! -d "${gradle_path}" ]]; then
-        echo "ERROR: Could not fetch gradle ${version}"
-        continue
+        if [[ ! -f "${zippath}" ]]; then
+          echo "ERROR: Could not fetch gradle ${version}"
+          continue
+        fi
       fi
+
+      unzip -q "${zippath}" -d "${GRADLE_VERSIONS_DIR}"
     fi
 
     for project in "${path}"/*; do