Move to debian/bullseye:slim as base image (#370)

lycheeverse · Oct 26, 2021 · b48292b · b48292b
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diff --git a/Dockerfile b/Dockerfile
@@ -22,7 +22,7 @@ RUN rm ./target/release/deps/lychee* \
 
 # Our production image starts here, which uses
 # the files from the builder image above.
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 
 RUN apt-get update \
     && DEBIAN_FRONTEND=noninteractive apt-get install -y \

diff --git a/README.md b/README.md
@@ -173,6 +173,15 @@ acat -F zip {file.epub} "*.xhtml" "*.html" | lychee -
 lychee --offline path/to/directory
 ```
 
+### Docker Usage
+
+Here's how to mount a local directory into the container and check some input
+with lychee:
+
+```sh
+docker run -v `pwd`:/input lycheeverse/lychee /input/README.md
+```
+
 ### GitHub token
 
 Optionally, to avoid getting rate-limited while checking GitHub links, you can
@@ -319,7 +328,7 @@ Try one of these links to get started:
 Lychee is written in Rust. Install [rust-up](https://rustup.rs/) to get started.
 Begin by making sure the following commands succeed without errors.
 
-```bash
+```sh
 cargo test # runs tests
 cargo clippy # lints code
 cargo install cargo-publish-all