Adds better support for acme.sh install out of the box

Author: jc21

docker/Dockerfile.acmesh

@@ -9,8 +9,19 @@ ENV CURL_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt
 COPY ./files/.bashrc.acmesh /root/.bashrc
 
 # acme.sh
-RUN mkdir -p /data/acme.sh \
-	&& curl -o /bin/acme.sh 'https://raw.githubusercontent.com/acmesh-official/acme.sh/master/acme.sh' \
-	&& chmod +x /bin/acme.sh
+RUN curl -o /tmp/acme.sh 'https://raw.githubusercontent.com/acmesh-official/acme.sh/master/acme.sh' \
+	&& chmod +x /tmp/acme.sh
+
+ENV ACMESH_CONFIG_HOME=/data/.acme.sh/config \
+	ACMESH_HOME=/data/.acme.sh \
+	CERT_HOME=/data/.acme.sh/certs \
+	LE_CONFIG_HOME=/data/.acme.sh/config \
+	LE_WORKING_DIR=/data/.acme.sh
+
+# this wrapper handles all the setup required for acme.sh and running commands for it
+COPY ./files/acme.sh-wrapper /bin/acme.sh
+
+# Test that the wrapper script is working
+RUN /bin/acme.sh -h
 
 LABEL org.label-schema.cmd="docker run --rm -ti nginxproxymanager/nginx-full:acmesh"

files/acme.sh-wrapper

@@ -0,0 +1,15 @@
+#!/bin/bash -e
+
+# Ensure acme.sh dirs exist
+mkdir -p "$ACMESH_HOME" "$ACMESH_CONFIG_HOME" "$CERT_HOME" "$LE_CONFIG_HOME" "$LE_WORKING_DIR"
+
+ACMESH_SCRIPT=/data/.acme.sh/acme.sh
+
+# Check for existence of $ACME_SH_SCRIPT
+if ! [ -f "$ACMESH_SCRIPT" ]; then
+	echo "$ACMESH_SCRIPT does not exist, installing acme.sh ..."
+	cd /tmp
+	./acme.sh --install --force --home "$ACMESH_HOME" --cert-home "$CERT_HOME" --config-home "$ACMESH_CONFIG_HOME"
+fi
+
+$ACMESH_SCRIPT --config-home "$ACMESH_CONFIG_HOME" "$@"