From e69ead23ec31f5e37d1242fc5ef79c9ccebb6215 Mon Sep 17 00:00:00 2001
From: Adar Nimrod <nimrod@shore.co.il>
Date: Sat, 29 Aug 2020 22:27:48 +0300
Subject: [PATCH] Just a single latest image based on Alpine.
---
Dockerfile | 32 ++++++++++++++++++++++++++++++++
README.md | 15 ++++++++++++++-
2 files changed, 46 insertions(+), 1 deletion(-)
create mode 100644 Dockerfile
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..9babce1
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,32 @@
+ARG GOSU_VERSION=1.12
+ARG ALPINE_VERSION=3.12
+FROM alpine:$ALPINE_VERSION as scratch
+ARG GOSU_VERSION
+ENV GOSU_VERSION=$GOSU_VERSION
+RUN set -eux; \
+ \
+ apk add --no-cache --virtual .gosu-deps \
+ ca-certificates \
+ dpkg \
+ gnupg \
+ ; \
+ \
+ dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
+ wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch"; \
+ wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc"; \
+ \
+# verify the signature
+ export GNUPGHOME="$(mktemp -d)"; \
+ gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4; \
+ gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \
+ command -v gpgconf && gpgconf --kill all || :; \
+ \
+ chmod +x /usr/local/bin/gosu; \
+# verify that the binary works
+ gosu --version; \
+ gosu nobody true;
+
+FROM alpine:$ALPINE_VERSION
+ARG GOSU_VERSION
+ENV GOSU_VERSION $GOSU_VERSION
+COPY --from=scratch /usr/local/bin/gosu /usr/local/bin/
diff --git a/README.md b/README.md
index 8f4f34f..5f68d04 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,19 @@
# Dockerized gosu
-> Docker images with gosu installed.
+> Alpine Docker image with gosu installed.
+
+## Usage
+
+The image is based on the latest Alpine image with just `gosu` installed. If you
+wish to use a different image as a base then you can just copy the binary from
+this image so:
+
+```
+FROM adarnimrod/gosu as gosu
+
+FROM alpine:latest
+COPY --from=gosu /usr/local/bin/gosu /usr/local/bin/
+```
## License
--
GitLab