Create files

.drone.yml

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+pipeline:
+  docker:
+    image: plugins/docker
+    registry: registry.makerforce.io
+    secrets: [ docker_username, docker_password ]
+    repo: registry.makerforce.io/build/openwrt-deps
+    tags:
+    - latest

Dockerfile

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+FROM ubuntu:bionic
+
+RUN apt update \
+	&& apt-get install -y \
+	git \
+	subversion \
+	build-essential \
+	libncurses5-dev \
+	zlib1g-dev \
+	gawk \
+	gcc-multilib \
+	flex \
+	gettext \
+	libssl-dev \
+	unzip \
+	wget \
+	time \
+	python \
+	file \
+	autoconf \
+	&& rm -rf /var/lib/apt/lists/*