diff --git a/docker/Dockerfile.linux.amd64 b/docker/Dockerfile.linux.amd64
index cefb50b..767455f 100644
--- a/docker/Dockerfile.linux.amd64
+++ b/docker/Dockerfile.linux.amd64
@@ -1,7 +1,9 @@
-FROM --platform=linux/amd64 alpine:latest
+FROM alpine:latest
 
 RUN apk --no-cache add ca-certificates
 
 ADD ./drone-helm /bin/
 
+RUN chmod +x /bin/drone-helm
+
 ENTRYPOINT ["/bin/drone-helm"]
\ No newline at end of file
diff --git a/docker/Dockerfile.linux.arm64 b/docker/Dockerfile.linux.arm64
index 5d27ccb..7978c3c 100644
--- a/docker/Dockerfile.linux.arm64
+++ b/docker/Dockerfile.linux.arm64
@@ -1,4 +1,4 @@
-FROM --platform=linux/arm64 alpine:latest as base
+FROM alpine:latest as base
 
 WORKDIR /app
 
diff --git a/docker/Dockerfile.windows.amd64 b/docker/Dockerfile.windows.amd64
index df4e463..c43edf6 100644
--- a/docker/Dockerfile.windows.amd64
+++ b/docker/Dockerfile.windows.amd64
@@ -1,4 +1,4 @@
-FROM --platform=windows/amd64 plugins/base:windows-ltsc2022-amd64
+FROM plugins/base:windows-ltsc2022-amd64
 
 USER ContainerAdministrator
 
diff --git a/drone-helm b/drone-helm
deleted file mode 100755
index e0e4aa8..0000000
Binary files a/drone-helm and /dev/null differ
diff --git a/main_test.go b/main_test.go
new file mode 100644
index 0000000..d076a02
--- /dev/null
+++ b/main_test.go
@@ -0,0 +1,16 @@
+package main
+
+import (
+	"os"
+	"testing"
+)
+
+func TestEnvironmentVariables(t *testing.T) {
+	os.Setenv("PLUGIN_REGISTRY_URL", "")
+	// Set other required env variables to non-empty values
+
+	if os.Getenv("PLUGIN_REGISTRY_URL") == "" {
+		t.Error("Expected an error due to missing PLUGIN_REGISTRY_URL")
+	}
+	// Repeat for other variables
+}