feat(tests): update Dockerfile and CI script for parallel builds and improved caching

Dockerfile.arch

@@ -1,6 +1,7 @@
 FROM archlinux
 
 ENV TERM=xterm
+ENV CC="ccache gcc"
 
 RUN pacman -Syu --noconfirm
 # reflector is optional - if it fails due to network issues, continue with default mirrorlist
@@ -12,6 +13,7 @@ RUN pacman -S --needed --noconfirm \
   autoconf-archive \
   automake \
   base-devel \
+  ccache \
   check \
   cmake \
   cmocka \

Dockerfile.debian

@@ -3,11 +3,13 @@ FROM debian:testing
 
 ENV DEBIAN_FRONTEND="noninteractive"
 ENV TERM=xterm
+ENV CC="ccache gcc"
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
   autoconf \
   autoconf-archive \
   automake \
+  ccache \
   gcc \
   git \
   libcmocka-dev \

Dockerfile.fedora

@@ -1,6 +1,9 @@
 # Build the latest Fedora image
 FROM fedora:latest
 
+ENV TERM=xterm
+ENV CC="ccache gcc"
+
 # libmicrohttpd - for stabber
 # glibc-locale - to have en_US locale
 RUN dnf install -y \
@@ -8,6 +11,7 @@ RUN dnf install -y \
   autoconf-archive \
   automake \
   awk \
+  ccache \
   gcc \
   git \
   glib2-devel \

Dockerfile.tumbleweed

@@ -1,12 +1,16 @@
 # Build the latest openSUSE Tumbleweed image
 FROM opensuse/tumbleweed
 
+ENV TERM=xterm
+ENV CC="ccache gcc"
+
 # libmicrohttpd - for stabber
 # glibc-locale - to have en_US locale
 RUN zypper --non-interactive in --no-recommends \
   autoconf \
   autoconf-archive \
   automake \
+  ccache \
   gcc \
   git \
   glib2-devel \

Dockerfile.ubuntu

@@ -2,11 +2,13 @@ FROM ubuntu:latest
 
 ENV DEBIAN_FRONTEND="noninteractive"
 ENV TERM=xterm
+ENV CC="ccache gcc"
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
   autoconf \
   autoconf-archive \
   automake \
+  ccache \
   gcc \
   git \
   libcmocka-dev \

ci-build.sh

@@ -44,7 +44,7 @@ ARCH="$(uname | tr '[:upper:]' '[:lower:]')"
 
 case "$ARCH" in
     linux*)
-        # Reduced set of configurations for faster CI
+        # 4 configurations for parallel CI
         tests=(
         # 1. Full build (all features enabled)
         "--enable-notifications --enable-icons-and-clipboard --enable-otr --enable-pgp
@@ -56,15 +56,13 @@ case "$ARCH" in
         --disable-python-plugins --without-xscreensaver --disable-omemo-qrcode --disable-gdk-pixbuf"
         # 3. No encryption (disable otr, pgp, omemo)
         "--disable-pgp --disable-otr --disable-omemo --disable-omemo-qrcode"
-        # 4. No plugins
-        "--disable-plugins --disable-c-plugins --disable-python-plugins"
-        # 5. Default configuration
+        # 4. Default configuration
         ""
         )
         source /etc/profile.d/debuginfod.sh 2>/dev/null || true
         ;;
     darwin*)
-        # Reduced set of configurations for faster CI
+        # 4 configurations for parallel CI
         tests=(
         # 1. Full build (all features enabled)
         "--enable-notifications --enable-icons-and-clipboard --enable-otr --enable-pgp
@@ -76,9 +74,7 @@ case "$ARCH" in
         --disable-python-plugins"
         # 3. No encryption (disable otr, pgp, omemo)
         "--disable-pgp --disable-otr --disable-omemo"
-        # 4. No plugins
-        "--disable-plugins --disable-c-plugins --disable-python-plugins"
-        # 5. Default configuration
+        # 4. Default configuration
         ""
         )
         ;;
@@ -90,7 +86,7 @@ case "$ARCH" in
         # src/event/server_events.c:1454:19: error: universal character names are only valid in C++ and C99
         CC="egcc -std=gnu99 -fexec-charset=UTF-8"
 
-        # Reduced set of configurations for faster CI
+        # 4 configurations for parallel CI
         tests=(
         # 1. Full build (all features enabled)
         "--enable-notifications --enable-icons-and-clipboard --enable-otr --enable-pgp
@@ -102,9 +98,7 @@ case "$ARCH" in
         --disable-python-plugins"
         # 3. No encryption (disable otr, pgp, omemo)
         "--disable-pgp --disable-otr --disable-omemo"
-        # 4. No plugins
-        "--disable-plugins --disable-c-plugins --disable-python-plugins"
-        # 5. Default configuration
+        # 4. Default configuration
         ""
         )
         ;;
@@ -129,18 +123,73 @@ case "$ARCH" in
         ;;
 esac
 
-for features in "${tests[@]}"
-do
-    echo
-    echo "--> Building with ./configure ${features} $*"
-    echo
+# Function to build and test a single configuration
+build_and_test() {
+    local features="$1"
+    local extra_args="$2"
+    local idx="$3"
+    local build_dir="build-$idx"
+    local log_file="build-$idx.log"
 
-    # shellcheck disable=SC2086
-    ./configure $features $*
+    {
+        echo "=== Build $idx started at $(date) ==="
+        echo "--> Building in $build_dir with ./configure $features $extra_args"
 
-    $MAKE CC="${CC}"
-    $MAKE check-functional-parallel
+        mkdir -p "$build_dir"
+        cd "$build_dir"
 
-    ./profanity -v
-    $MAKE clean
+        # shellcheck disable=SC2086
+        ../configure $features $extra_args
+
+        $MAKE CC="${CC}"
+        $MAKE check-functional-parallel
+
+        ./profanity -v
+        $MAKE clean
+
+        cd ..
+        rm -rf "$build_dir"
+
+        echo "=== Build $idx completed at $(date) ==="
+    } > "$log_file" 2>&1
+}
+
+# Run all 4 configurations in parallel
+echo "Starting parallel builds..."
+pids=()
+for idx in 1 2 3 4; do
+    if [ $idx -le ${#tests[@]} ]; then
+        build_and_test "${tests[$((idx-1))]}" "$*" "$idx" &
+        pids+=("$!")
+        echo "Started build $idx (PID: $!)" 
+    fi
 done
+
+# Wait for all builds and check exit codes
+failed=0
+for i in "${!pids[@]}"; do
+    idx=$((i + 1))
+    if wait "${pids[$i]}"; then
+        echo "✓ Build $idx passed"
+    else
+        echo "✗ Build $idx failed"
+        echo "--- Log for build $idx ---"
+        cat "build-$idx.log"
+        echo "--- End log ---"
+        failed=1
+    fi
+done
+
+# Show all logs on success too
+if [ $failed -eq 0 ]; then
+    echo
+    echo "All builds passed!"
+    for idx in 1 2 3 4; do
+        if [ -f "build-$idx.log" ]; then
+            echo "--- Log for build $idx ---"
+            cat "build-$idx.log"
+        fi
+    done
+else
+    exit 1
+fi