diff --git a/docker/Dockerfile.linux.amd64 b/docker/Dockerfile.linux.amd64
index 548df2f..df70a65 100644
--- a/docker/Dockerfile.linux.amd64
+++ b/docker/Dockerfile.linux.amd64
@@ -8,5 +8,5 @@ LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
 RUN apk add --no-cache ca-certificates && \
   rm -rf /var/cache/apk/*
 
-ADD release/linux/amd64/drone-scp /bin/
+COPY release/linux/amd64/drone-scp /bin/
 ENTRYPOINT ["/bin/drone-scp"]
diff --git a/docker/Dockerfile.linux.arm b/docker/Dockerfile.linux.arm
index b4cbfb3..c764a2f 100644
--- a/docker/Dockerfile.linux.arm
+++ b/docker/Dockerfile.linux.arm
@@ -8,5 +8,5 @@ LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
 RUN apk add --no-cache ca-certificates && \
   rm -rf /var/cache/apk/*
 
-ADD release/linux/arm/drone-scp /bin/
+COPY release/linux/arm/drone-scp /bin/
 ENTRYPOINT ["/bin/drone-scp"]
diff --git a/docker/Dockerfile.linux.arm64 b/docker/Dockerfile.linux.arm64
index a465438..0ef335b 100644
--- a/docker/Dockerfile.linux.arm64
+++ b/docker/Dockerfile.linux.arm64
@@ -8,5 +8,5 @@ LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
 RUN apk add --no-cache ca-certificates && \
   rm -rf /var/cache/apk/*
 
-ADD release/linux/arm64/drone-scp /bin/
+COPY release/linux/arm64/drone-scp /bin/
 ENTRYPOINT ["/bin/drone-scp"]
diff --git a/docker/Dockerfile.windows.amd64 b/docker/Dockerfile.windows.amd64
index a58201b..0454312 100644
--- a/docker/Dockerfile.windows.amd64
+++ b/docker/Dockerfile.windows.amd64
@@ -5,5 +5,5 @@ LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
   org.label-schema.vendor="Bo-Yi Wu" \
   org.label-schema.schema-version="1.0"
 
-ADD drone-scp.exe /drone-scp.exe
+COPY drone-scp.exe /drone-scp.exe
 ENTRYPOINT [ "\\drone-scp.exe" ]