fix(ci): Fix multi-arch build problem

Added build linux/arm64 binary to default ci

.drone.yml

@@ -27,6 +27,8 @@ steps:
     image: rancher/dapper:v0.6.0
     commands:
       - dapper ci
+    environment:
+      CROSS: "${DRONE_BUILD_EVENT}"
     privileged: true
     volumes:
       - name: docker
@@ -120,7 +122,7 @@ steps:
       - dapper ci
     privileged: true
     environment:
-      CROSS: 1
+      CROSS: "${DRONE_BUILD_EVENT}"
     volumes:
       - name: docker
         path: /var/run/docker.sock

scripts/build

@@ -14,7 +14,18 @@ LD_INJECT_VALUES="-X github.com/rancher/steve/pkg/version.Version=$VERSION
 
 pushd $GIT_SOURCE
 
-if [ -n "$CROSS" ]; then
+case "$CROSS" in 
+    "push")
+        for ARCH in ${OS_ARCH_ARG_LINUX}; do
+            OUTPUT_BIN="bin/kube-explorer-linux-$ARCH"
+            echo "Building binary for linux/$ARCH..."
+            GOARCH=$ARCH GOOS=linux CGO_ENABLED=0 go build -tags embed \
+                    -ldflags \
+                    "$LD_INJECT_VALUES $LINKFLAGS" \
+                    -o ${OUTPUT_BIN}
+        done
+        ;;
+    "tag")
         for ARCH in ${OS_ARCH_ARG_LINUX}; do
             OUTPUT_BIN="bin/kube-explorer-linux-$ARCH"
             echo "Building binary for linux/$ARCH..."
@@ -41,13 +52,15 @@ if [ -n "$CROSS" ]; then
                     "$LD_INJECT_VALUES" \
                     -o ${OUTPUT_BIN}
         done
-else
+        ;;
+    *)
         # only build one for current platform
         CGO_ENABLED=0 go build -tags embed \
             -ldflags \
             "$LD_INJECT_VALUES $LINKFLAGS" \
             -o "bin/kube-explorer-$(uname | tr '[:upper:]' '[:lower:]')-${ARCH}"
-fi
+        ;;
+esac
 
 mkdir -p $DAPPER_SOURCE/bin