docs: Revise Dockerfile instructions

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Brennan Kinney
2025-05-06 17:26:56 +12:00
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## Usage ## Usage
### From git directory Run the image with `testssl.sh` options appended (default is `--help`). The container entrypoint is already set to `testsl.sh` as the command for convenience.
``` ```bash
docker build . docker run --rm -it ghcr.io/testssl/testssl.sh:3.2 --fs github.com
``` ```
Catch is when you run without image tags you need to catch the ID when building ### Output files
``` Keep in mind that any output file (_`--log`, `--html`, `--json`, etc._) will be created within the container.
[..]
---> 889fa2f99933 Use a volume bind mount to a local host directory to access the files outside of the container. Set a working directory for the container and any options output prefix can then use a relative path, like this example for `--htmfile`:
Successfully built 889fa2f99933
```bash
# Writes the HTML output to the host path: /tmp/example.com_p443-<date>-<time>.html
docker run --rm -it -v /tmp:/data --workdir /data ghcr.io/testssl/testssl.sh:3.2 --htmlfile ./ example.com
``` ```
More comfortable is **NOTE:**
- The UID/GID ownership of the file will be created by the container user `testssl` (`1000:1000`), with permissions `644`.
- Your host directory must permit the `testssl` container user or group to write to that host volume. You could alternatively use [`docker cp`](https://docs.docker.com/reference/cli/docker/container/cp/).
``` ### From DockerHub or GHCR
docker build -t mytestssl .
docker run --rm -t mytestssl example.com You can pull the image from either of these registries:
- DockerHub: [`drwetter/testssl.sh`](https://hub.docker.com/r/drwetter/testssl.sh)
- GHCR: [`ghcr.io/testssl/testssl.sh`](https://github.com/testssl/testssl.sh/pkgs/container/testssl.sh)
Supported tags:
- `3.2` / `latest`
- `3.0` is the old stable version ([soon to become EOL](https://github.com/testssl/testssl.sh/tree/3.0#status))
### Building
You can build with a standard `git clone` + `docker build`. Tagging the image will make it easier to reference.
```bash
mkdir /tmp/testssl && cd /tmp/testssl
git clone --branch 3.2 --depth 1 https://github.com/testssl/testssl.sh .
docker build --tag localhost/testssl.sh:3.2 .
``` ```
You can also supply command line options like: There are two base images available:
- `Dockerfile` (openSUSE Leap), glibc-based + faster.
- `Dockerfile-alpine` (Alpine), musl-based + half the size.
``` Alpine is made available if you need broarder platform support or an image about 30MB smaller at the expense of speed.
docker run -t mytestssl --help
docker run --rm -t mytestssl -p --header example.com #### Remote build context + `Dockerfile`
You can build with a single command instead via:
```bash
docker build --tag localhost/testssl.sh:3.2 https://github.com/testssl/testssl.sh.git#3.2
``` ```
### From dockerhub or GHCR This will produce a slightly larger image however as `.dockerignore` is not supported with remote build contexts.
You can pull the image from dockerhub or ghcr.io and run: If you would like to build the Alpine image instead this way, just provide the alternative `Dockerfile` via `--file`:
``docker run --rm -t drwetter/testssl.sh --fs example.com`` or ``docker run --rm -t ghcr.io/testssl/testssl.sh --fs example.com``
Supported tags are: ``3.2`` and ``latest``, which are the same. ``3.0`` is the old stable version which will be retired soon.
``docker run --rm -t drwetter/testssl.sh:stable example.com`` or ``docker run --rm -t ghcr.io/testssl/testssl.sh:stable example.com``
Keep in mind that any output file (--log, --html, --json etc.) will be created within the container. If you wish to have this created in a local directory on your host you can mount a volume into the container and change the output prefix where the container user has write access to, e.g.:
```bash
docker build \
--tag localhost/testssl.sh:3.2-alpine \
--file https://raw.githubusercontent.com/testssl/testssl.sh/3.2/Dockerfile-alpine \
https://github.com/testssl/testssl.sh.git#3.2
``` ```
docker run --rm -t -v /tmp:/data drwetter/testssl.sh --htmlfile /data/ example.com
```
which writes the HTML output to ``/tmp/example.com_p443-<date>-<time>.html.`` The uid/gid is the one from the docker user. Normally the file is 644. testssl.sh's docker container uses a non-root user (usually with user/groupid 1000:1000).