Switch to Debian-slim base images

Signed-off-by: Johann Hoffmann <johann.hoffmann@mailbox.org>

Dockerfile

@@ -1,16 +1,16 @@
-ARG ALPINE_VERSION=3.16.2
+ARG DEBIAN_VERSION=11.4-slim
 ARG POCO_VERSION=poco-tip-v1
 ARG FMTLIB_VERSION=9.0.0
 ARG CPPKAFKA_VERSION=tip-v1
 ARG JSON_VALIDATOR_VERSION=2.1.0
 
-FROM alpine:$ALPINE_VERSION AS build-base
+FROM debian:$DEBIAN_VERSION AS build-base
 
-RUN apk add --update --no-cache \
+RUN apt-get update && apt-get install --no-install-recommends -y \
     make cmake g++ git \
-    unixodbc-dev postgresql-dev mariadb-dev \
-    librdkafka-dev boost-dev openssl-dev \
-    zlib-dev nlohmann-json
+    unixodbc-dev libpq-dev libmariadb-dev libmariadbclient-dev-compat \
+    librdkafka-dev libboost-all-dev libssl-dev \
+    zlib1g-dev nlohmann-json3-dev
 
 FROM build-base AS poco-build
 
@@ -90,21 +90,21 @@ WORKDIR /owgw/cmake-build
 RUN cmake ..
 RUN cmake --build . --config Release -j8
 
-FROM alpine:$ALPINE_VERSION
+FROM debian:$DEBIAN_VERSION
 
 ENV OWGW_USER=owgw \
     OWGW_ROOT=/owgw-data \
     OWGW_CONFIG=/owgw-data
 
-RUN addgroup -S "$OWGW_USER" && \
-    adduser -S -G "$OWGW_USER" "$OWGW_USER"
+RUN useradd "$OWGW_USER"
 
 RUN mkdir /openwifi
 RUN mkdir -p "$OWGW_ROOT" "$OWGW_CONFIG" && \
     chown "$OWGW_USER": "$OWGW_ROOT" "$OWGW_CONFIG"
 
-RUN apk add --update --no-cache librdkafka su-exec gettext ca-certificates bash jq curl \
-    mariadb-connector-c libpq unixodbc postgresql-client
+RUN apt-get update && apt-get install --no-install-recommends -y \
+    librdkafka++1 gosu gettext ca-certificates bash jq curl wget \
+    libmariadb-dev-compat libpq5 unixodbc
 
 COPY readiness_check /readiness_check
 COPY test_scripts/curl/cli /cli

docker-entrypoint.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 set -e
 
 if [ "$SELFSIGNED_CERTS" = 'true' ]; then
@@ -86,7 +86,7 @@ if [ "$1" = '/openwifi/owgw' -a "$(id -u)" = '0' ]; then
     if [ "$RUN_CHOWN" = 'true' ]; then
         chown -R "$OWGW_USER": "$OWGW_ROOT" "$OWGW_CONFIG"
     fi
-    exec su-exec "$OWGW_USER" "$@"
+    exec gosu "$OWGW_USER" "$@"
 fi
 
 exec "$@"

wait-for-postgres.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # wait-for-postgres.sh
 
 set -e
@@ -20,7 +20,7 @@ if [ "$1" = '/openwifi/owgw' -a "$(id -u)" = '0' ]; then
     if [ "$RUN_CHOWN" = 'true' ]; then
       chown -R "$OWGW_USER": "$OWGW_ROOT" "$OWGW_CONFIG"
     fi
-    exec su-exec "$OWGW_USER" "$@"
+    exec gosu "$OWGW_USER" "$@"
 fi
 
 exec "$@"