Revert "Update seccomp to 20.10 docker (drone-plugins#322)"

This reverts commit dd359df.

docker/docker/Dockerfile.linux.amd64

@@ -2,14 +2,5 @@ FROM docker:19.03.8-dind
 
 ENV DOCKER_HOST=unix:///var/run/docker.sock
 
-RUN apk --update add --virtual .build-deps curl && \
-    mkdir -p /etc/docker/ && \
-    curl -SsL -o /etc/docker/default.json https://raw.githubusercontent.com/moby/moby/20.10/profiles/seccomp/default.json && \
-    sed -i 's/SCMP_ACT_ERRNO/SCMP_ACT_TRACE/g' /etc/docker/default.json && \
-    chmod 600 /etc/docker/default.json && \
-    apk del .build-deps && \
-    rm -rf /var/cache/apk/* && \
-    rm -rf /tmp/*
-
 ADD release/linux/amd64/drone-docker /bin/
 ENTRYPOINT ["/usr/local/bin/dockerd-entrypoint.sh", "/bin/drone-docker"]

docker/docker/Dockerfile.linux.arm

@@ -4,7 +4,7 @@ ENV DOCKER_HOST=unix:///var/run/docker.sock
 
 RUN apk --update add --virtual .build-deps curl && \
     mkdir -p /etc/docker/ && \
-    curl -SsL -o /etc/docker/default.json https://raw.githubusercontent.com/moby/moby/20.10/profiles/seccomp/default.json && \
+    curl -SsL -o /etc/docker/default.json https://raw.githubusercontent.com/moby/moby/19.03/profiles/seccomp/default.json && \
     sed -i 's/SCMP_ACT_ERRNO/SCMP_ACT_TRACE/g' /etc/docker/default.json && \
     chmod 600 /etc/docker/default.json && \
     apk del .build-deps && \

docker/docker/Dockerfile.linux.arm64

@@ -2,14 +2,5 @@ FROM arm64v8/docker:19.03.8-dind
 
 ENV DOCKER_HOST=unix:///var/run/docker.sock
 
-RUN apk --update add --virtual .build-deps curl && \
-    mkdir -p /etc/docker/ && \
-    curl -SsL -o /etc/docker/default.json https://raw.githubusercontent.com/moby/moby/20.10/profiles/seccomp/default.json && \
-    sed -i 's/SCMP_ACT_ERRNO/SCMP_ACT_TRACE/g' /etc/docker/default.json && \
-    chmod 600 /etc/docker/default.json && \
-    apk del .build-deps && \
-    rm -rf /var/cache/apk/* && \
-    rm -rf /tmp/*
-
 ADD release/linux/arm64/drone-docker /bin/
 ENTRYPOINT ["/usr/local/bin/dockerd-entrypoint.sh", "/bin/drone-docker"]