Added dockerfile.

Dockerfile

@@ -0,0 +1,39 @@
+FROM alpine:latest
+
+# Read the release version from the build args
+ARG RELEASE_TAG
+ARG BUILD_DATE
+LABEL build="JusteReseau - Version: ${RELEASE_TAG}"
+LABEL description="This is a docker image for Jackett, that work with Kubernetes security baselines."
+LABEL maintainer="JusteSonic"
+
+WORKDIR /tmp
+
+# Do the package update and install
+RUN apk update && apk upgrade && \
+  apk add --no-cache icu-libs krb5-libs libintl libssl1.1 libstdc++ lttng-ust zlib && \
+  rm -rf /var/cache/apk/*
+
+# Install Jackett
+RUN wget -O /tmp/jacket.tar.gz https://github.com/Jackett/Jackett/releases/download/${RELEASE_TAG}/Jackett.Binaries.LinuxMuslAMDx64.tar.gz \
+  && tar -xvzf /tmp/jacket.tar.gz -C /opt \
+  && rm -rf /tmp/*
+
+WORKDIR /config
+
+# Ensure the jackett user and group exists and set the permissions
+RUN adduser -D -u 1000 -h /config jackett \
+  && chown -R jackett:jackett /config \
+  && chown -R jackett:jackett /opt/Jackett
+
+# Set the user
+USER jackett
+
+# Expose the port
+EXPOSE 9117
+
+# Change the config directory
+ENV XDG_CONFIG_HOME=/config
+
+# Set the command
+CMD ["/opt/Jackett/jackett"]