MEDIUM: Add GOMEMLIMIT support and switch Go runtime to 1.19

Author: dkorunic

build/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:1.17-alpine AS builder
+FROM golang:1.19-alpine AS builder
 
 RUN apk --no-cache add git openssh
 

fs/etc/services.d/ingress-controller/run

@@ -1,3 +1,6 @@
 #!/usr/bin/with-contenv sh
 
+MEMLIMIT=$(free -m | awk '/Mem:/ {print int($2 / 3)}')
+export GOMEMLIMIT="${MEMLIMIT}MiB"
+
 exec /haproxy-ingress-controller --with-s6-overlay ${EXTRA_OPTIONS}