Dockerfile updates (#77)

* Added VERB environment variable for enabling verbosity in the Docker container
* pin the versions for golang and alpine at their current latest
* move the entrypoint script to a separate file, removed EXPOSE command from Dockerfile

support/build.Dockerfile

@@ -1,11 +1,10 @@
-FROM golang:latest as builder
+FROM golang:1.18 as builder
 COPY . /gossaSrc
 RUN cd /gossaSrc && make
 
-FROM alpine
-ENV UID="1000" GID="1000" HOST="0.0.0.0" PORT="8001" PREFIX="/" FOLLOW_SYMLINKS="false" SKIP_HIDDEN_FILES="true" DATADIR="/shared" READONLY="false"
-EXPOSE 8001
+FROM alpine:3.15
+ENV UID="1000" GID="1000" HOST="0.0.0.0" PORT="8001" PREFIX="/" FOLLOW_SYMLINKS="false" SKIP_HIDDEN_FILES="true" DATADIR="/shared" READONLY="false" VERB="false"
 RUN apk add --no-cache su-exec
+COPY ./support/entrypoint.sh /entrypoint.sh
 COPY --from=builder /gossaSrc/gossa /gossa
-RUN echo -e 'exec su-exec ${UID}:${GID} /gossa -h ${HOST} -p ${PORT} -k=${SKIP_HIDDEN_FILES} -ro=${READONLY} --symlinks=${FOLLOW_SYMLINKS} --prefix=${PREFIX} ${DATADIR}'>> /start.sh
-ENTRYPOINT [ "sh", "/start.sh" ]
+ENTRYPOINT "/entrypoint.sh"

support/entrypoint.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec su-exec ${UID}:${GID} /gossa -h ${HOST} -p ${PORT} -k=${SKIP_HIDDEN_FILES} -ro=${READONLY} --symlinks=${FOLLOW_SYMLINKS} --prefix=${PREFIX} --verb=${VERB} ${DATADIR}